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Bethemesh Widgets
Embed Bethemesh tools on your site
Add Bethemesh tools to WordPress, Webflow, Wix, or any HTML page for free. Every widget stays responsive, fast, and keeps data processing local.
Local processing · Fits its container · Updated without touching your code
Images & graphics
Image Editor
Crop, resize, add captions or watermarks, apply effects, and optimize an image in one editor.
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Images & graphics
Resize an image
Resize an image by setting its exact width and height before downloading the result.
PDF & documents
Merge PDF files
Merge multiple PDF files in the order you select them to create one combined document.
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Development
Base64 encoder and decoder
Encode text as Base64 or decode a Base64 string back to its original content.
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Images & graphics
Convert and compress an image
Convert an image to PNG, JPEG, or WebP and adjust output quality before download.
PDF & documents
Extract PDF pages
Select the pages you want to keep and create a new PDF containing only that selection.
Data & spreadsheets
Merge Excel or CSV files
Merge multiple Excel or CSV files into one table with automatic column alignment.
Data & spreadsheets
Convert CSV to JSON (and JSON to CSV)
Convert CSV data to JSON or JSON to CSV while preserving useful structure.
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PDF & documents
Rotate PDF pages
Turn PDF pages the right way up in quarter turns, page by page, with no loss of quality.
Data & spreadsheets
Compare two Excel or CSV files
Compare two Excel or CSV files using a key column and spot the differences.
Web & SEO
URL encoder and decoder
Encode or decode a URL, its parameters, and any special characters it contains.
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Data & spreadsheets
Convert Excel, CSV and JSON
Convert Excel, CSV, and other spreadsheet formats directly in your browser.
Text & writing
Compare two lists
Compare two lists to find the items they share and the ones that differ.
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Images & graphics
Favicon generator
Create a favicon.ico and a site’s PNG icons (16 to 512 px) from one image, in your browser.
PDF & documents
Split a PDF
Split a PDF into multiple files using the pages or page ranges you choose.
Data & spreadsheets
Split an Excel file by column
Split an Excel file into multiple sheets based on values from a selected column.
Text & writing
Count values
Count how many times each value appears in a list and spot the most frequent items at a glance.
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Text & writing
Remove duplicates
Remove duplicate lines from a list while keeping one occurrence of each value.
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Text & writing
Brand Name Generator & Analyzer
Create brand, product, project or domain names from your keywords – not personal names.
Text & writing
Sort a list
Sort the items of a list alphabetically or numerically, in ascending or descending order.
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Text & writing
Split a list
Split a long list into groups of a fixed size, based on the number of items you choose.
Science
Ohm’s law calculator: voltage, current, resistance and power
Enter any two values among voltage, current, resistance and power to calculate the other two automatically.
Health & wellness
BMR calculator
Estimate your basal metabolic rate in kcal and kJ, and compare the Mifflin-St Jeor, Harris-Benedict and Katch-McArdle equations.
Health & wellness
Bra size calculator
Work out your bra size from your underbust and bust measurements, with UK, US, EU, French, Italian and Australian sizes and sister sizes.
Health & wellness
Heart-rate zones calculator
Calculate your maximum heart rate (Tanaka, 220 − age, Gulati) and your five training zones, with the Karvonen method if you know your resting heart rate.
Education & exams
French Bac 2027 reform: grade and honours calculator
Simulate your 2027 French Bac average, result, honours and the grades you still need.
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Development
JSON formatter
Format, minify, and validate JSON to make it easier to read or more compact.
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PDF & documents
Add a watermark to a PDF
Add a text watermark to every page of a PDF locally in your browser.
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Development
YAML formatter
Format and validate a YAML document to improve readability and detect common errors.
Dates & time
Convert a Unix timestamp to a date (and a date to a timestamp)
Convert a Unix timestamp to a readable date and time, or a date to a timestamp, in seconds or milliseconds.
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Development
UUID generator
Generate one or more random UUID v4 identifiers instantly and copy them when needed.
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Dates & time
Age calculator
Calculate an exact age in years, months and days from a date of birth and any reference date.
Security & privacy
Hash Generator
Compute MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of a text or file in one go.
PDF & documents
Resize PDF pages
Resize every PDF page to a standard or custom size locally in your browser.
Text & writing
Word and character counter
Analyse a text and get its number of words, characters, lines, sentences and paragraphs.
Security & privacy
Password generator
Generate strong random passwords from 8 to 128 characters, with the entropy shown.
PDF & documents
Compress PDF
Reduce PDF file size locally with lossless optimization or stronger visual compression.
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Mathematics & calculation
Random number generator (draws, dice, lottery)
Draw up to 1,000 random integers or decimals in a range, with or without repeats, for raffles, dice or sampling.
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PDF & documents
Flatten PDF
Flatten form fields or create a visually fixed PDF directly in your browser.
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Text & writing
Email address extractor
Extract every email address found in a text and remove the duplicates.
Text & writing
Lorem ipsum generator
Generate Lorem Ipsum placeholder text for mockups, prototypes and layout tests.
PDF & documents
Extract images from PDF
Recover raster images embedded in a PDF without converting whole pages to images.
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Data & spreadsheets
CSV validator
Validate CSV structure and quickly identify problematic rows or columns in your data.
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Text & writing
Number lines
Automatically add a number in front of every line, in the format you choose.
Security & privacy
HMAC Generator and Verifier
Compute an HMAC-SHA-1, SHA-256, SHA-384 or SHA-512 in hex or Base64 and verify a webhook signature.
PDF & documents
Sanitize a PDF
Clean a PDF locally by removing metadata, JavaScript, automatic actions and embedded attachments.
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Data & spreadsheets
CSV Deduplicator
Remove duplicate CSV rows using the columns you choose as matching criteria.
Text & writing
Remove empty lines
Automatically remove empty lines and lines containing only spaces from a text.
Science
Dilution calculator: C₁V₁ = C₂V₂
Calculate a dilution concentration or volume from three known values using C₁V₁ = C₂V₂.
Health & wellness
Running pace calculator
Calculate your running pace, finish time or distance, predict race times from 5K to marathon and get your split times, in miles or kilometres.
Security & privacy
AES Encrypt & Decrypt
Encrypt and decrypt text with a password using AES-256-GCM, right in your browser.
Health & wellness
BMI calculator
Calculate your body mass index from height and weight, with adult reference ranges and clearly explained limitations.
Health & wellness
TDEE calculator - total daily energy expenditure
Estimate your total daily energy expenditure from your activity, compare the five levels and get guideline intakes for each weight goal.
Education & exams
French Brevet 2027 reform: grade and honours calculator
Calculate your 2027 DNB average, result, honours and the grades you still need.
PDF & documents
PDF to Markdown
Extract selectable text from a PDF and convert it to Markdown locally, without OCR or uploading the document.
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Data & spreadsheets
CSV Splitter
Split a CSV file into smaller files using the size or groups you choose.
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Security & privacy
X.509 Certificate & CSR Inspector
Decode a PEM X.509 certificate or CSR: subject, issuer, dates, SANs, public key and SHA-256 fingerprint.
PDF & documents
PDF to CSV
Extract the tables in a PDF into a CSV file to open in Excel, LibreOffice or Google Sheets.
PDF & documents
Password protect a PDF
Encrypt a PDF locally with a password and AES-256 without uploading your document.
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Data & spreadsheets
CSV Compare
Compare two CSV files to quickly identify rows and values that differ between them.
Development
HTML formatter and minifier
Format HTML or remove ordinary comments locally while retaining text whitespace and script content. No page execution or upload is required.
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Text & writing
Change text case
Convert text to lowercase, UPPERCASE, Title Case or other common case styles.
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Security & privacy
PBKDF2 password hash and verify
Derive a salted PBKDF2-SHA-256 or SHA-512 password hash, or verify a password against an encoded value.
PDF & documents
PDF to HTML
Convert the text of a PDF into a structured HTML page with headings, paragraphs and tables.
PDF & documents
Unlock a PDF
Remove PDF password protection locally when you know the current password.
Development
CSS formatter and minifier
Format or minify CSS to improve readability or reduce file size.
PDF & documents
PDF to XML
Turn the text of a PDF into structured XML (pages, headings, paragraphs, tables), ready for automated processing.
Data & spreadsheets
CSV Merge
Merge multiple CSV files into one table while keeping columns aligned consistently.
Security & privacy
SRI Hash Generator
Generate the SRI integrity attribute of a script or stylesheet from pasted content, a file or a CDN URL.
Development
Regular expression tester
Test a regular expression against text and inspect the matches it returns.
Data & spreadsheets
CSV Filter
Filter CSV rows by column using text, exact values, or numeric conditions.
Health & wellness
Calories Burned Calculator
Estimate calories burned walking, running, cycling or doing everyday activities using your weight and workout time.
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Data & spreadsheets
CSV Statistics and Data Profile
Profile every CSV column with detected type, missing values, cardinality, and descriptive numeric statistics.
Science
Density calculator: ρ = m / V
Calculate density, mass or volume from any two known values with automatic unit conversion.
Health & wellness
Ideal weight calculator
Find your ideal weight for your height: healthy BMI range and the Devine, Robinson, Miller, Hamwi, Lorentz, Broca, Creff and Monnerot-Dumaine formulas.
Education & exams
Weighted grade average calculator
Calculate a weighted average and the next grade needed to reach your target.
PDF & documents
Remove blank pages from a PDF
Automatically detect and remove blank PDF pages directly in your browser.
Education & exams
Test score calculator
Turn a number of correct answers into a percentage score and count your mistakes, for a multiple-choice test, quiz or exam.
PDF & documents
Repair PDF
Repair a damaged PDF locally by rebuilding recoverable internal structures.
PDF & documents
Overlay two PDFs
Overlay the pages of one PDF onto another locally, with adjustable opacity.
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Education & exams
GPA calculator
Calculate a credit-weighted GPA from the grade points of each course, on a 4.0 scale or another scale.
PDF & documents
Compare PDFs
Compare two PDFs page by page and measure their visual differences locally.
PDF & documents
Remove annotations from a PDF
Remove comments, highlights and other page annotations without changing the main content.
Development
HTTP Header Builder
Build custom HTTP headers and get output ready to use in your requests.
Education & exams
Cumulative GPA target calculator
Find the GPA you need over your next credits to reach a target cumulative GPA, and see whether the goal is still possible.
PDF & documents
Create PDF booklet
Rearrange PDF pages into spreads ready for duplex booklet printing.
PDF & documents
Analyze PDF information
Inspect pages, size, version, metadata, forms, annotations and active elements in a PDF.
Development
API Request Builder
Build a complete HTTP API request with method, URL, parameters, headers, and body.
Education & exams
Grade scale converter
Rescale a grade out of 20, 10, 100 or any maximum to another scale, with its percentage, by simple proportion.
PDF & documents
OCR PDF
Recognize text in a scanned PDF and create a searchable PDF directly in your browser.
PDF & documents
Change PDF permissions
Control printing, modifications and content extraction with an AES-256 owner password.
Development
HTTP Header Analyzer
Analyze HTTP headers to review security, caching, CORS, and cookie behavior.
Education & exams
Attendance calculator
Calculate your attendance rate, how many more classes you can miss and the classes you need to reach your target.
PDF & documents
Split a PDF by size or page count
Automatically split a PDF by a maximum number of pages or a target file size.
Security & privacy
Basic Auth Generator & Decoder
Create the Authorization: Basic header from a username and password, or decode an existing header.
PDF & documents
Put multiple PDF pages on one sheet
Place 2, 4, 6 or 9 PDF pages on each A4 or Letter sheet.
Security & privacy
JWT Encoder
Create and sign an HS256, HS384 or HS512 JWT from a header, a JSON payload and a secret.
PDF & documents
Adjust PDF contrast and colors
Correct contrast, brightness and saturation or convert a PDF to grayscale.
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Science
Speed, distance and time calculator: v = d / t
Calculate average speed, distance or elapsed time from any two known values with automatic unit conversion.
Health & wellness
Waist-to-hip ratio calculator
Calculate your waist-to-hip ratio, place your waist size on the WHO cut-offs and, with your height, get the waist-to-height ratio recommended by NICE.
Education & exams
Spain PAU university access and admission grade calculator
Calculate the Spanish university access grade out of 10 and admission grade out of 14.
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PDF & documents
Fill a PDF form
Fill in the fields of an interactive PDF form on screen, then lock the answers if needed.
PDF & documents
Convert PDF to Excel
Extract PDF tables into an XLSX workbook, with a separate sheet for each detected table and local processing.
PDF & documents
Interleave PDF front and back pages
Alternate pages from front and back scans, optionally reverse the backs and check the final order before downloading.
PDF & documents
Split double PDF pages in half
Separate scanned spreads vertically or horizontally, adjust the cut and choose the reading order without rasterizing every page.
PDF & documents
Extract text from a PDF
Extract selectable PDF text as UTF-8 TXT, choose pages, inspect the preview and copy the result without OCR.
Science
Newton's second law calculator: F = m × a
Calculate net force, mass or acceleration from any two known values using F = ma.
Health & wellness
Body fat calculator
Estimate your body fat percentage with the U.S. Navy method from body measurements, then see your fat mass and lean body mass.
Health & wellness
Body surface area (BSA) calculator
Calculate body surface area in m² from height and weight, with the Mosteller, Du Bois, Haycock, Gehan-George and Boyd formulas.
Education & exams
Portugal university application grade calculator
Calculate the Portuguese nota de candidatura on the 0–200 scale.
Health & wellness
Lean body mass calculator
Estimate lean body mass with Boer, James and Hume, with an optional comparison from a known body-fat percentage.
Health & wellness
FFMI and FMI calculator
Calculate FFMI, height-normalized FFMI and FMI from height, weight and body-fat percentage.
Science
Molar concentration calculator: C = n / V
Calculate molar concentration, amount of substance or solution volume from any two known values.
Education & exams
Italy Maturità final grade calculator
Calculate the Italian Maturità final score out of 100.
Science
Kinetic energy calculator: Eₖ = ½mv²
Calculate kinetic energy, mass or speed from any two known values using Eₖ = ½mv².
Education & exams
IB Diploma points calculator
Calculate your IB score out of 45 and check the main Diploma passing criteria.
Science
Molar mass calculator and moles to grams converter
Calculate molar mass from a chemical formula, then convert mass to moles or moles to mass.
Education & exams
UCAS Tariff points calculator
Calculate UCAS points for A levels, AS levels and the EPQ.
Science
pH, pOH, [H₃O⁺] & [OH⁻] calculator
Calculate pH, pOH, hydronium concentration or hydroxide concentration at 25 °C from one known value.
Education & exams
ECTS credit and workload calculator
Convert ECTS credits into study workload and track progress toward a credit target.
Education & exams
School report calculator
Model a school report with several subjects across one to four grading periods.
Science
Series and parallel resistor calculator
Compare both connections with a circuit diagram, tolerances and individual currents and powers.
Science
Chemical equation balancer
Automatically balance a neutral molecular chemical equation with the smallest whole-number coefficients.
Development
SQL formatter
Format queries using the formatter’s general SQL dialect without a database connection. Processing runs locally in your browser.
Development
JavaScript formatter
Format JavaScript, TypeScript or JSX for easier reading without executing code. Processing runs locally in your browser.
Text & writing
Markdown formatter
Format Markdown text into a cleaner and more consistent structure for easier review.
Security & privacy
Password strength checker
Check how strong a password is: entropy, weak patterns, estimated time to crack and advice.
Security & privacy
JWT Signature Verifier
Verify a JWT signature with an HMAC secret or a JWK, JWKS or PEM public key, then check exp, nbf, iss and aud.
Security & privacy
Secure token generator
Generate secure random tokens from 8 to 256 bytes in hex, Base64 or Base64URL, with an optional prefix.
Security & privacy
Hash Compare
Check whether two hashes or checksums match, regardless of case, spaces or colons.
Security & privacy
OAuth PKCE Generator
Generate a PKCE code_verifier, its S256 code_challenge and a state for your OAuth authorization request.
Text & writing
Text comparator
Compare two texts line by line and quickly spot additions, deletions and changes.
Security & privacy
TOTP Generator & Verifier
Generate TOTP 2FA codes from a Base32 secret, build the otpauth:// URI and verify a 6- or 8-digit code.
Text & writing
Number extractor
Automatically extract every number found in a text and get them back as a list.
Security & privacy
JWK / JWKS Inspector
Inspect a JWK or JWKS: kid, kty, alg, use, RFC 7638 thumbprint and a warning when private key material is exposed.
Text & writing
Date extractor
Automatically extract the numeric dates found in a text and get them back as a list.
Text & writing
Readability analyzer
Estimate how easy a text is to read with the Flesch reading ease score.
Science
Stoichiometry calculator: limiting reagent and yield
Balance the reaction, enter reactant masses and calculate the limiting reagent, theoretical product and percent yield.
Development
HTML entity encoder and decoder
Encode or decode common HTML entities to convert special characters in text.
Development
JSON to YAML and YAML to JSON converter
Convert JSON data to YAML or YAML data to JSON directly in your browser.
Development
JSON to XML and XML to JSON Converter
Convert JSON data to XML or XML data to JSON directly in your browser.
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Development
JSON Schema validator
Validate a JSON document against a schema and locate every error precisely.
Development
XPath tester
Test an XPath expression against XML and immediately inspect the matching results.
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Development
Cron expression builder
Build a standard cron expression, understand it and preview its next execution times.
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Mathematics & calculation
Number base converter: binary, octal, decimal, hex
Convert an integer between bases 2 and 36: binary, octal, decimal, hexadecimal or a custom base, with negatives and very large integers.
Development
Unix permissions calculator
Convert Unix permissions between octal and symbolic notation and generate a chmod command.
Text & writing
HTML to Markdown
Convert HTML into readable portable Markdown directly in your browser.
Development
.gitignore generator
Create a .gitignore file from presets for your technologies and tools.
Science
Ideal gas law calculator: PV = nRT
Calculate pressure, volume, amount of gas or temperature with the ideal gas law.
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Health & wellness
Child blood type calculator
Explore possible child blood types from the parents' blood groups.
Science
Projectile motion calculator: range, height and flight time
Calculate a projectile trajectory from initial speed, launch angle, initial height and gravity.
Science
Free fall calculator: time and impact speed
Calculate fall time and final speed from height, initial downward velocity and gravity.
Science
Half-life and radioactive decay calculator
Calculate remaining quantity, elapsed time, half-life or initial quantity with exponential decay.
Science
Resistor color code calculator: 4, 5 and 6 bands
Decode resistor bands to get resistance, tolerance and, for 6 bands, temperature coefficient.
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Science
Electrical cable size calculator
Find the size of a copper cable from its current-carrying capacity and voltage drop, with the circuit breaker, installation method and temperature.
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Data & spreadsheets
Convert CSV to TSV (and TSV to CSV)
Convert tabular text between comma-separated and tab-separated formats.
Data & spreadsheets
Duplicate analyzer
Find duplicate lines, count occurrences and export a clean summary.
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Mathematics & calculation
Universal Unit Converter
Convert length, weight, volume, temperature, pressure, energy, fuel economy, digital storage and electrical units with exact factors.
Mathematics & calculation
Geometry Calculator: Area, Perimeter and Volume
Choose a 2D shape or 3D solid, enter the dimensions you know and get the area, perimeter, diagonals, angles, surface area and volume.
Development
JSON to TypeScript, Zod and JSON Schema
Generate TypeScript interfaces, types, Zod schemas, or JSON Schema from sample JSON.
Mathematics & calculation
Percentage calculator: X% of Y, proportion, percent change
Calculate X% of a value, what percentage a value is of a total, the percent change between two values or the original value before a change.
Mathematics & calculation
Centimeters to inches converter (and inches to cm)
Convert centimeters to inches and inches to centimeters with the exact factor 1 inch = 2.54 cm, for screens, clothing sizes and product dimensions.
Dates & time
Date difference calculator
Calculate the time between two dates in years, months and days, in total days and in weeks.
Dates & time
Add or subtract time from a date
Add or subtract days, weeks, months or years from a date and get the resulting date with its day of the week.
Mathematics & calculation
Convert kg to lbs (and lbs to kg)
Convert kilograms to pounds (lb) and pounds to kilograms with the exact factor 1 lb = 0.45359237 kg, plus a table of common values.
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Dates & time
Business days calculator
Count the business days between two dates and shift a date by a number of working days, for a Monday–Friday or other working week.
Mathematics & calculation
Convert mm to inches (and inches to mm)
Convert millimeters to inches and inches to millimeters with the exact factor 1 inch = 25.4 mm, for fasteners, tools, wheels and tires.
Images & graphics
Color palette generator
Build a complementary, analogous, triadic or monochromatic palette from one color.
Dates & time
Time Duration Calculator
Calculate the duration between a start time and an end time, even past midnight.
Mathematics & calculation
Convert °C to °F (and °F to °C)
Convert degrees Celsius to Fahrenheit and back with the exact formula °F = °C × 1.8 + 32, plus a table of common temperatures.
Images & graphics
Image metadata reader
Read a photo’s EXIF data: camera, settings, capture date and GPS position.
Dates & time
Convert hours and minutes to decimal hours (and decimal hours back to hours and minutes)
Convert hours and minutes to decimal hours or hundredths and back.
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Dates & time
Duration Converter
Convert milliseconds, seconds, minutes, hours, days, weeks and working days.
Mathematics & calculation
Kilometers to miles converter (and miles to km)
Convert kilometers to miles and miles to kilometers using the exact factor 1 mi = 1.609344 km, with a table of common values.
Images & graphics
Image metadata remover
See a photo’s EXIF and GPS data, then download a copy that no longer contains it.
Dates & time
Overtime Calculator (French rules)
Work out overtime above 35 hours, the +25 % and +50 % premiums of French law or your own rates, and the annual quota.
Dates & time
How many days until a date
Find out how many days are left until a date, or how many have passed since, with the equivalent in weeks.
Mathematics & calculation
Convert meters to feet (and feet to meters)
Convert meters to feet and feet to meters with the exact factor 1 foot = 0.3048 m, for height, altitude, construction and aviation.
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Dates & time
Compensatory Rest Calculator (French rules)
Turn overtime into replacement rest or work out the mandatory rest due beyond the annual overtime quota under French law.
Dates & time
ISO Week Number Calculator
Find the ISO week number of a date, its ISO year and the Monday-to-Sunday dates.
Mathematics & calculation
Convert feet to inches (and inches to feet)
Convert feet to inches and inches to feet with the exact ratio 1 foot = 12 inches, for heights, ceilings and construction dimensions.
PDF & documents
PDF to images
Convert PDF pages into individual images ready to download directly in your browser.
Dates & time
Sunday and Public Holiday Pay Calculator (French rules)
Estimate pay for a Sunday or public holiday worked under French law: double pay on 1 May and mayor’s Sundays, +30 % in large food stores, or your agreement’s rate.
Dates & time
Time Zone Converter
Convert a date and time from one time zone to another, daylight saving time included.
Mathematics & calculation
Convert ounces to grams (and grams to ounces)
Convert ounces (oz) to grams and grams to ounces with the exact factor 1 oz = 28.349523125 g, plus a kitchen-friendly conversion table.
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Dates & time
Work Hours Calculator
Add up the hours you worked this week, breaks deducted, in hours and minutes and in decimal hours.
PDF & documents
PDF Editor
Add text, annotations, images, drawings or a signature directly to your PDF.
Mathematics & calculation
Convert pounds (lb) to grams (and grams to pounds)
Convert pounds to grams and grams to pounds with the exact factor 1 lb = 453.59237 g, plus a kitchen-friendly conversion table.
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Web & SEO
Query string parser and builder
Parse URL parameters or build a query string from key-value pairs.
Dates & time
Excel Timesheet Generator
Create a monthly XLSX timesheet: one row per day, start and end times, breaks, hours worked, decimal hours and totals calculated by formulas.
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Dates & time
Convert MM/DD/YYYY or DD/MM/YYYY dates to YYYY-MM-DD (and back)
Convert a date between MM/DD/YYYY, DD/MM/YYYY and ISO YYYY-MM-DD, in both directions.
Mathematics & calculation
Convert liters to US gallons (and US gallons to liters)
Convert liters to US gallons and US gallons to liters with the exact factor 1 US gal = 3.785411784 L, plus a table of common values.
Dates & time
French part-time additional hours calculator
Calculate hours worked above a French part-time contract, their 10% and 25% premiums and the resulting pay.
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Dates & time
Date Range Generator
List every date between two endpoints, every N days, weeks, months or years.
Images & graphics
QR Code Reader
Read the content of a QR code from an image directly in your browser.
Mathematics & calculation
Convert cubic meters to liters (and liters to cubic meters)
Convert cubic meters to liters and liters to cubic meters with the exact factor 1 m³ = 1,000 L, plus examples for water, pools and tanks.
Dates & time
Night Work Premium Calculator
Count the hours of a shift that fall in the night period (9 pm – 6 am by default, French rule) and estimate a configurable night premium.
Dates & time
Meeting Time Planner Across Time Zones
Find meeting slots that fall within the working hours of two time zones.
Images & graphics
Create a GIF from images
Combine multiple images into an animated GIF directly in your browser.
Mathematics & calculation
Convert km/h to mph (and mph to km/h)
Convert kilometers per hour to miles per hour and back, using the exact factor 1 mph = 1.609344 km/h, with a table of common speed limits.
Dates & time
Convert a part-time percentage to hours (and hours to a percentage)
Convert a part-time percentage into hours per week, month and year, or find the percentage of a weekly schedule.
Dates & time
Business Hours Calculator
Calculate the business hours between two dates from your daily working hours.
Images & graphics
Color blindness simulator
Preview an image as it may appear with different types of color vision deficiency.
Mathematics & calculation
Area of a Square Calculator (Side or Diagonal)
Find the area of a square from its side (s²) or its diagonal (d² ÷ 2).
Dates & time
Hours and minutes sum calculator
Add several hour-and-minute durations and get the total as h:mm, decimal hours and minutes.
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Images & graphics
Image comparator
Compare two images with a before/after slider, side by side or by highlighting the pixels that differ.
Mathematics & calculation
Perimeter of a Square Calculator (Side or Diagonal)
Find the distance around a square from its side (4 × s) or its diagonal (2√2 × d).
Dates & time
French RTT rest-days estimator (39 h and annual days package)
Estimate French RTT days: a 39-hour week against the 35-hour reference, or rest days under a 218-day annual package for a given year.
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Dates & time
Relative Time Calculator
Express the gap between two date-times as “3 days ago” or “in 2 hours”.
Images & graphics
Convert an image to Base64 (and Base64 to image)
Convert an image to Base64/Data URI and convert Base64 back to an image.
Mathematics & calculation
Area of a Rectangle Calculator (Square Feet or m²)
Multiply length by width to get the area of a rectangle, even with different units for each side.
Dates & time
French paid leave accrual calculator
Work out the paid-leave days earned in France over the reference period, including during non-occupational sick leave.
Dates & time
Day of Year Calculator
Find the number of a day within its year (1 to 365 or 366) and the days remaining.
Mathematics & calculation
Perimeter of a Rectangle Calculator
Find the distance around a rectangle from its length and width: P = 2 × (L + W).
Dates & time
Recurring Dates Generator
Get the next N dates of a daily, weekly, monthly or yearly recurrence.
Mathematics & calculation
Area of a Triangle Calculator (Base, 3 Sides or Angle)
Find the area of a triangle from the base and height, all three sides (Heron's formula) or two sides and the included angle.
Mathematics & calculation
Perimeter of a Triangle Calculator
Add up the three sides of a triangle, or find the third side with the law of cosines from two sides and the included angle.
Mathematics & calculation
Area of a Circle Calculator
Find the area of a circle from its radius, diameter or circumference, in the unit of your choice.
Mathematics & calculation
Circumference of a Circle Calculator
Find the circumference of a circle from its radius or diameter, with the formula C = 2πr explained.
Dates & time
Muslim prayer times
Calculate Fajr, Sunrise, Dhuhr, Asr, Maghrib and Isha times for your city.
Mathematics & calculation
Pythagorean Theorem Calculator with Converse and Steps
Find the hypotenuse or a missing leg of a right triangle, or check whether a triangle is right-angled with the converse, with a full worked solution.
Mathematics & calculation
Intercept Theorem Calculator (Thales) with Converse
Find a missing length with the intercept theorem, also called the basic proportionality or side splitter theorem, or test parallel lines with its converse.
Mathematics & calculation
Calculate X% of a number
Find a percentage of any value: 20% of 150, 8% sales tax on a price or a 20% tip on a bill.
Mathematics & calculation
What percentage is X of Y?
Find what percentage a value is of a total: 30 out of 150, a test score, a share of your budget.
Mathematics & calculation
Rule of Three Calculator: Cross Multiplication and Ratios
Find a fourth proportional by cross multiplication, solve inverse proportion, or simplify a ratio.
Mathematics & calculation
Percentage increase calculator
Find the percentage increase between two values, add X% to a value or work back to the value before the increase.
Web & SEO
Local Indexability Analyzer
Detect noindex, nofollow and canonical inconsistencies from HTML.
Mathematics & calculation
Percentage decrease calculator
Find the percentage decrease between two values, reduce a value by X% or work back to the value before the decrease.
Mathematics & calculation
Convert square meters to square feet (and back)
Convert square meters to square feet and back with the exact factor 1 ft² = 0.09290304 m², for real estate and home projects.
Mathematics & calculation
Convert hectares to acres (and acres to hectares)
Convert hectares to acres and acres to hectares with the exact factor 1 acre = 4,046.8564224 m², plus a table of common land areas.
Mathematics & calculation
Convert liters to UK gallons (and imperial gallons to liters)
Convert liters to British imperial gallons and UK gallons to liters with the exact factor 1 UK gal = 4.54609 L, plus a table of common values.
Mathematics & calculation
Bar to PSI converter (and PSI to bar)
Convert pressure from bar to psi and back, using the exact factor 1 bar = 14.5038 psi, with a table of common tyre and equipment pressures.
Mathematics & calculation
Convert kW to Horsepower (hp) and PS
Convert kilowatts to mechanical horsepower (hp) and metric horsepower (PS) without mixing them up: 1 hp = 745.699872 W, 1 PS = 735.49875 W.
Mathematics & calculation
Convert MB, GB, MiB and GiB (Decimal vs Binary)
Convert decimal megabytes and gigabytes (MB, GB) to binary mebibytes and gibibytes (MiB, GiB): 1 GB = 1,000,000,000 bytes, 1 GiB = 1,073,741,824 bytes.
Data & spreadsheets
Join two Excel or CSV files
Match two tables on a shared column without uploading your files.
Mathematics & calculation
Convert yards to meters (and meters to yards)
Convert yards to meters and meters to yards with the exact factor 1 yard = 0.9144 m, for American football, golf, fabric and swimming pools.
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Finance & business
Savings goal calculator
Calculate how much to save regularly to reach a target amount.
Mathematics & calculation
Convert psi to kPa (and kPa to psi)
Convert pressure from psi to kilopascals and back with the factor 1 psi = 6.894757 kPa and a table of common pressures.
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Dates & time
Qibla Direction
Calculate the direction of the Kaaba from your city or coordinates: bearing in degrees from true north and distance to Makkah.
Mathematics & calculation
Convert knots to km/h (and km/h to knots)
Convert knots to kilometers per hour and back with the exact factor 1 knot = 1.852 km/h, for sailing, aviation and marine weather.
Dates & time
Convert a Hijri date to Gregorian (and a Gregorian date to Hijri)
Convert an Umm al-Qura Hijri date to a Gregorian date, or the other way round, with weekday and an after-sunset option.
Mathematics & calculation
Convert kWh to Joules (and Joules to kWh)
Convert kilowatt-hours to joules and joules to kWh with the exact factor 1 kWh = 3,600,000 J, plus examples from electricity bills and batteries.
Dates & time
Shabbat Times: Candle Lighting and Havdalah
Calculate Friday candle-lighting and Havdalah times for your city and the week you choose.
Mathematics & calculation
Number to words (and words to number)
Write a number in words in English, French, Spanish, German, Italian or Portuguese, or turn written words back into digits.
Mathematics & calculation
Fraction Calculator with Steps
Add, subtract, multiply, divide and simplify fractions, with every step shown.
Dates & time
Convert a Hebrew date to Gregorian (and a Gregorian date to Hebrew)
Convert a Hebrew (Jewish) calendar date to a Gregorian date, or the other way round, with Adar I and Adar II, the date in Hebrew and an after-sunset option.
Mathematics & calculation
Cheque amount in words: euros and cents
Write a euro amount in words for a cheque, or turn a written amount back into figures.
Mathematics & calculation
GCF / GCD and LCM Calculator with Steps
Find the GCF (GCD) and LCM of two or more numbers, with the Euclidean algorithm and prime factorization.
Dates & time
Easter Date Calculator (Western and Orthodox)
Find the date of Easter for any year, Western and Orthodox, with Ash Wednesday, Ascension, Pentecost and the related holidays.
Mathematics & calculation
Mean, Median, Mode and Range Calculator
Paste a list of numbers to get its mean, median, mode, range, sum and count.
Dates & time
Rahu Kalam calculator
Find today’s Rahu Kalam (Rahu Kaal) for your city from the actual local sunrise and sunset.
Mathematics & calculation
Standard Deviation and Variance Calculator
Calculate the standard deviation and variance of a data set, for a population (σ) and for a sample (s), with the deviations table.
Finance & business
Zakat calculator
Estimate Zakat at 2.5% from assets, debts and your chosen Nisab standard.
Dates & time
Convert a Persian date to Gregorian (and a Gregorian date to Persian)
Convert a Persian (Solar Hijri, Jalali) calendar date to a Gregorian date, or the other way round, with the date in Persian, leap year and Nowruz date.
Dates & time
Convert a Japanese Era Year to a Gregorian Year (and back)
Convert a date between the Gregorian calendar and the Meiji, Taishō, Shōwa, Heisei and Reiwa eras.
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Dates & time
Convert a Julian date to Gregorian (and a Gregorian date to Julian)
Convert a Julian (Old Style) calendar date to a Gregorian date, or the other way round, with the gap in days, the weekday and the Julian Day Number.
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Dates & time
Golden hour and blue hour calculator
Find when golden hour and blue hour start and end, morning and evening, for any place and date.
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Dates & time
Sun shadow calculator
Work out the length and direction of an object’s shadow from the place, date, time and its height.
Data & spreadsheets
Pivot Table
Cross a row dimension with a column dimension, then calculate count, sum, average, minimum, or maximum.
Dates & time
Choghadiya calculator
Get the 8 day and 8 night Choghadiya for your city, calculated from the actual local sunrise and sunset.
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Dates & time
Convert an Ethiopian Date to a Gregorian Date (and back)
Convert dates between the 13-month Ethiopian calendar and the Gregorian calendar.
Data & spreadsheets
Unpivot Table (Melt / Wide to Long)
Turn a wide table into long format while preserving identifier columns.
Dates & time
Convert a Coptic Date to a Gregorian Date (and back)
Convert dates between the 13-month Coptic calendar and the Gregorian calendar.
Data & spreadsheets
Add a Calculated Column
Create a new numeric column from a formula that references other table columns.
Dates & time
Convert an Indian Saka Date to a Gregorian Date (and back)
Convert dates between the Indian national Saka calendar and the Gregorian calendar.
Data & spreadsheets
Flatten Nested JSON
Turn nested JSON objects into explicit path columns ready for tabular use.
Dates & time
Convert a Bikram Sambat Date to a Gregorian Date (and back)
Convert dates between the Nepali Bikram Sambat calendar and the Gregorian calendar.
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Mathematics & calculation
Convert cups to grams (and grams to cups)
Convert US cups, tablespoons and teaspoons to grams by ingredient: flour, sugar, butter, milk and more.
Security & privacy
CSP Generator
Build a Content Security Policy directive by directive, with HTTP header, meta tag and warnings.
Security & privacy
Security Headers Generator
Generate HSTS, nosniff, Referrer-Policy, Permissions-Policy, COOP/COEP/CORP and X-Frame-Options for Nginx or Apache.
Security & privacy
Password policy generator
Create a modern password policy: length, blocklists, passphrases, expiration and attempt limits.
Images & graphics
QR code generator
Create a QR code locally for text, a URL, email, phone number or Wi-Fi network.
Images & graphics
Image color extractor
Extract a dominant color palette from an image without uploading it to a server.
Images & graphics
Image cropper
Draw a frame on the image, lock a ratio (1:1, 4:5, 16:9…) and download the cropped part.
Images & graphics
Rotate an image
Rotate an image left, right, or to a custom angle directly in your browser.
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Images & graphics
Resize an image canvas
Expand or reduce the canvas around an image without resizing its content.
Images & graphics
Adjust an image
Adjust brightness, contrast, saturation, exposure, temperature, hue, shadows, highlights, and sharpness.
Images & graphics
Blur or pixelate an image area
Select a specific area of an image, then blur or pixelate it locally.
Images & graphics
Annotate an image
Add text, arrows, and highlights to an image directly in your browser.
Images & graphics
Convert pixels to cm (and cm to pixels)
Convert pixels to centimetres and back at a given resolution (DPI), or measure the print size of an image.
Images & graphics
Image optimizer
Lighten an image by setting its quality or aiming for a size in KB, with the final size shown before download.
Images & graphics
Responsive image generator
Create multiple image widths and automatically generate srcset and picture markup.
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Images & graphics
Photo collage maker
Combine several images into a grid with configurable spacing and background.
Images & graphics
Image watermark tool
Add text or a logo locally with adjustable position, opacity, size, and rotation.
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Images & graphics
Convert SVG
Convert SVG files to PNG, JPEG or WebP with preview and output settings.
Images & graphics
Blur or pixelate an image
Apply blur, pixelation, grayscale, or sepia with adjustable intensity.
Images & graphics
Make an image background transparent
Remove a white or solid-color background and get a transparent PNG, without uploading your image.
Images & graphics
Social media image resizer
Resize an image to the right dimensions for Instagram, Facebook, LinkedIn, YouTube, X, TikTok or Pinterest in one click.
Images & graphics
Round image and rounded corners
Crop a photo into a circle, round its corners and add a border, with a transparent background.
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Web & SEO
Structured data JSON-LD validator
Validate JSON-LD syntax and detect types, entities, and structural warnings.
Web & SEO
Link rel analyzer
Classify internal, external, and relative HTML links and inspect nofollow, sponsored, and ugc.
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Web & SEO
Keyword density analyzer
Measure term frequency, phrase occurrences, and density in text or HTML.
Web & SEO
301 redirect rule generator
Generate 301 rules for Apache, Nginx, Netlify, or Vercel from a URL mapping.
Web & SEO
User-Agent parser
Identify the browser, operating system, device and bots in a User-Agent string.
Finance & business
Loan calculator and monthly payments
Simulate a loan, calculate monthly payments and total cost, and view a complete amortization schedule.
Finance & business
VAT Calculator (France): Net, VAT and Gross
Instantly calculate net price, VAT and gross price in either direction.
Finance & business
ROI Calculator: Return on Investment
Calculate ROI, net gain and the total cost of an investment.
Finance & business
Break-even Calculator and Break-even Point
Calculate the revenue and sales volume needed to cover your costs.
Finance & business
Discount and Sale Price Calculator
Calculate a discounted price, the amount saved, or the discount percentage.
Finance & business
Hourly, monthly and annual salary calculator
Calculate pay from hours worked × hourly rate or convert hourly, weekly, monthly and annual salary.
Finance & business
Auto loan calculator
Estimate car payments with a down payment, trade-in, taxes, fees and a full amortization schedule.
Finance & business
Gross to net salary calculator (France)
Estimate net pay before income tax from gross salary, or calculate gross pay from net.
Finance & business
Compound interest calculator
Calculate capital growth with compound interest and regular contributions.
Finance & business
Margin and markup calculator
Calculate gross margin, markup rate, margin rate and selling price.
Finance & business
CAGR calculator: compound annual growth rate
Calculate CAGR between an initial and a final value.
Finance & business
Salary increase calculator
Calculate your new salary after a raise or find the percentage needed to reach a target salary.
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Finance & business
Inflation and purchasing power calculator
Estimate how inflation affects an amount.
Finance & business
Rental yield calculator
Calculate the gross and net yield of a rental property investment.
Finance & business
Sales commission calculator
Calculate sales commission from revenue and the applicable commission rate.
Finance & business
Mortgage affordability calculator
Estimate how much you can borrow and the home price you may afford from income, debts, down payment, rate and term.
Finance & business
Freelance salary / day rate calculator
Estimate the day rate you need to reach a target monthly net income.
Finance & business
Debt-to-income ratio calculator
Calculate your total debt-to-income ratio, housing ratio and remaining monthly borrowing room.
Finance & business
NPV calculator – net present value
Calculate net present value from an initial investment, future cash flows and a discount rate.
Finance & business
IRR calculator – internal rate of return
Estimate internal rate of return from an initial investment and future cash flows.
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Finance & business
Payback period calculator
Calculate how long an investment takes to recover, with simple and discounted cash flows.
Finance & business
Working Capital & Cash Calculator
Calculate working capital requirement, working capital, net cash and WCR days.
Finance & business
Gross Operating Surplus (EBE) & EBITDA Calculator
Calculate French EBE, EBITDA and both margins as a percentage of revenue.
Finance & business
Customer acquisition cost (CAC) calculator
Calculate average CAC and the payback period for customer acquisition spend.
Finance & business
Customer lifetime value (LTV / CLV) calculator
Estimate LTV from monthly revenue, gross margin, and monthly churn.
Finance & business
Burn rate & runway calculator
Calculate monthly burn rate and the number of months of cash runway remaining.
Finance & business
Inventory turnover calculator
Calculate annual inventory turnover and average days of inventory.
Finance & business
Cash conversion cycle (CCC) calculator
Calculate DIO, DSO, DPO, and cash conversion cycle days.
Finance & business
French social security number key calculator (NIR)
Calculate the 2-digit key of a French social security number or check a complete number.
Finance & business
French VAT number calculator
Build a French intra-community VAT number from a SIREN or SIRET, or check its key.
Construction & renovation
Concrete calculator
Calculate concrete volume and the cement, sand, gravel or bags required.
Construction & renovation
Paint calculator
Calculate paintable area, litres required and paint containers to buy.
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Construction & renovation
Concrete block calculator
Calculate concrete blocks, pallets and mortar bags for a wall.
Construction & renovation
Gravel calculator
Calculate gravel volume, weight, bags or bulk bags to buy.
Construction & renovation
Slope calculator
Convert slope between percent, degrees, rise, length and ratio.
Construction & renovation
Drywall calculator
Calculate plasterboards, tracks, studs and screws for a partition or ceiling.
Construction & renovation
Flooring and laminate calculator
Calculate packs, underlay, surplus and skirting boards for your floor.
Construction & renovation
Thermal insulation calculator
Calculate area, volume, packs and thermal resistance R of insulation.
Construction & renovation
Wallpaper calculator
Calculate drops and rolls from dimensions and pattern repeat.
Construction & renovation
Stair calculator
Calculate steps, riser height, going, angle and the Blondel formula.
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Construction & renovation
Roof tile calculator
Calculate sloped roof area and the number of tiles required.
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Construction & renovation
Render calculator
Calculate render kilograms and bags from area, thickness and consumption per mm.
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Construction & renovation
Mortar calculator
Estimate mortar volume and bags for a brick or block wall.
Construction & renovation
Rebar calculator
Estimate bar counts, linear length, and weight for a reinforcement grid.
Construction & renovation
Wall stud calculator
Estimate studs, plates, and timber length for a framed wall.
Construction & renovation
Rafter calculator
Calculate rafter length, count, and total timber for a simple gable roof.
Construction & renovation
Asphalt calculator
Estimate asphalt volume, tonnage, and truckloads for a rectangular area.