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Number base converter
Instantly convert whole numbers between bases 2 and 36. Compare binary, octal, decimal and hexadecimal representations without sending your data anywhere.
- 100% local
- Instant
- Free
- No account
- Works offline
- Clipboard
Number to convert
Results
Binary (base 2)
Octal (base 8)
Decimal (base 10)
Hexadecimal (base 16)
Target-base result
Why use this tool?
Convert a whole number between bases 2 and 36. The tool displays binary, octal, decimal and hexadecimal representations side by side, entirely in your browser.
Smart processing
Generate, convert, or validate technical data with purpose-built controls.
Supported formats
Technical formats and syntaxes suited to each generator, converter, or validator.
Save time
Get a clean, ready-to-use result in seconds without installing software or configuring a complex workflow.
Guide
How to use this tool
- 1
Enter the number
Type a whole number and choose its source base.
- 2
Choose the target base
Select a standard base or a custom value from 2 to 36.
- 3
Compare representations
Review and copy the result in several bases.
Tips and best practices
- The 0b, 0o and 0x prefixes are accepted in their matching bases.
- Spaces and underscores are ignored, making large values easier to read.
Frequently asked questions
Which bases are supported?
Every whole-number base from 2 through 36.
Can I convert very large numbers?
Yes. The calculation uses BigInt and is not limited by standard JavaScript number precision.
Are my values sent to a server?
No. Conversion runs entirely in your browser.
Was this tool useful?
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