Time Converter
Convert between seconds, minutes, hours, days and years.
Converted locally in your browser — nothing is uploaded.
- From milliseconds up to years in one view.
- Useful for turning API timeouts, cache TTLs and rate limits into human units.
- Runs in your browser.
Why this is private
- Converted locally in your browser — nothing is uploaded.
- Open your browser's DevTools → Network tab while using this tool — you won't see a request carrying your input, because it never leaves your device.
- Nothing you enter is uploaded to a server or shared with us — the processing happens entirely on your device.
Overview
Converts durations between milliseconds, seconds, minutes, hours, days, weeks and years.
How to use it
- 1Enter a value and pick its unit.
- 2Pick the target unit.
- 3The result updates instantly.
Tips
- The "year" unit here is a flat 365 days, matching the label — it doesn't average in leap years. For exact calendar spacing between two real dates, use the Date Difference Calculator instead.
Frequently asked questions
What people use it for
Read a timeout or TTL in secondsConvert a 3600-second cache lifetime to "1 hour".
Work out a duration in daysTurn 100,000 minutes into days to gauge a deadline.
Convert a video or audio lengthExpress a total in seconds as minutes and hours.
Estimate elapsed time from millisecondsTurn a benchmark's millisecond figure into seconds or minutes.
Related tools
All developer toolsUnix Timestamp ConverterConvert between Unix timestamps and human-readable dates.Speed ConverterConvert between km/h, mph, m/s, knots and Mach.Date Difference CalculatorCalculate the number of days, weeks or months between two dates — or just business days.Length ConverterConvert between 16 length units — metric, imperial, nautical and astronomical.
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Time Converter