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Duration converter

Convert between seconds, minutes, hours, days, and weeks.

Every unit here is a fixed elapsed duration, a day is always exactly 86,400,000 ms, a week always 604,800,000 ms. Nothing is calendar-relative: there are no months (28-31 days) or years, and daylight-saving changes do not apply to elapsed time. If you need calendar math ("add one month", "same time next week across a DST change"), that is date arithmetic, not duration conversion.
Duration. A plain number, or an expression like 1h 30mInput unit

Enter a duration above to see it in every unit. The unit selector is ignored when you type an expression like 90m.
Paste, drop, or type to begin. Everything stays on this device.

More time & date tools

- Timestamp converter (/time/timestamp-converter)
- Time zone converter (/time/timezone-converter)
All time & date tools (/time)

Canonical HTML: https://nutter.tools/time/duration-converter/
Markdown version: https://nutter.tools/time/duration-converter/index.md
Plain-text version: https://nutter.tools/time/duration-converter/index.txt
Agent index: https://nutter.tools/llms.txt