Duration Converter (Seconds, Minutes, Hours)
Convert any duration between milliseconds, seconds, minutes, hours, days, and weeks. Reads human formats like 1h 30m and clock formats like 01:30:00.
The unit applies to a plain number. Written durations like "1h 30m" and clock formats like 01:30:00 are read as-is.
1m 30s
00:01:30 (hh:mm:ss)
Months use 30 days and years use 365 days, the usual convention for durations. For a gap between two real dates, where month lengths and leap years matter, use the timestamp difference calculator.
Frequently Asked Questions
›How many hours is 90000 seconds?
25 hours. Type 90000 with the unit set to seconds and every other unit updates at once, together with a readable '1d 1h' breakdown.
›What input formats are accepted?
A plain number in the unit you pick, a compact duration like '1h 30m' or '2d4h', and clock formats like 1:30 (mm:ss) or 01:30:00 (hh:mm:ss).
›How are months and years counted?
A month is treated as 30 days and a year as 365 days, which is the usual convention for durations. For calendar-accurate results between two real dates, use the timestamp difference calculator.