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Duration Converter

Convert durations from milliseconds to weeks, with a human-readable breakdown.

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.
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Next door in Time

- Timestamp converter (/time/timestamp-converter)
- Timezone converter (/time/timezone-converter)
All time 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