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Duration Converter
Instantly convert a duration between seconds, minutes, hours, days and weeks with local calculation in your browser.
- 100% local
- Instant
- Free
- No account
- Works offline
Enter a valid duration greater than or equal to zero.
Why use this tool?
Instantly convert a duration between seconds, minutes, hours, days and weeks using fixed and predictable conversion ratios.
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.
Fonctionnement
How does this tool work?
The engine converts the entered value to a common reference unit and then transforms it into the selected target unit. Ratios are fixed: 60 seconds per minute, 60 minutes per hour, 24 hours per day and 7 days per week. The swap control simply exchanges source and target units before recalculating the value. Because this tool converts durations rather than calendar dates, timezones and daylight-saving changes cannot affect the result.
Use cases
Planning
Use this calculation to prepare a deadline or schedule with a value that can be checked immediately.
Verification
Check a result produced elsewhere and identify an input or method mistake more easily before using it.
Everyday use
Get an immediate answer for a common timing need without building a spreadsheet or repeating manual arithmetic.
Guide
How to use this tool
- 1
Enter the values
Provide the dates, times or durations requested by the tool.
- 2
Adjust the options
Choose the units or parameters that match your situation.
- 3
Review the result
The result recalculates automatically whenever an input changes.
Tips and best practices
- Check the entered values before using the result in a document, schedule or decision.
- The calculation runs locally in your browser and your data is not sent to a server.
- Reset the tool whenever you want to start a new scenario with clean inputs.
Frequently asked questions
Is the calculation automatic?
Yes. The result updates as soon as the required values are valid, without sending your data to a server.
Does my data stay local?
Yes. The entered information is processed directly in your browser by the shared Dates & time engine.
Can I change values after a calculation?
Yes. Change any input at any time and the result is immediately recalculated using the new values.
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