Time Converter
Seconds, minutes, hours, days and weeks with worked examples.
Time Converter
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Units in this category
| Unit | Symbol | Exactly |
|---|---|---|
| seconds (s) | s | reference unit for this category |
| minutes (min) | min | 60 s |
| hours (h) | h | 3,600 s |
| days (d) | d | 86,400 s |
| weeks (wk) | wk | 604,800 s |
Where these factors come from
Civil timekeeping defines the day as exactly 86,400 SI seconds, the week as 7 days and the hour as 3600 seconds. Leap seconds adjust the clock, not the units, so these factors are exact.
All 20 time pairs
| from → to | s | min | h | d | wk |
|---|---|---|---|---|---|
| s (second) | — | 0.01666667 | 0.0002777778 | 0.0000115741 | 0.0000016534 |
| min (minute) | 60 | — | 0.01666667 | 0.0006944444 | 0.0000992063 |
| h (hour) | 3,600 | 60 | — | 0.04166667 | 0.005952381 |
| d (day) | 86,400 | 1,440 | 24 | — | 0.14285714 |
| wk (week) | 604,800 | 10,080 | 168 | 7 | — |
Conversions by starting unit
seconds (s)
minutes (min)
min to smin to hmin to dmin to wk
hours (h)
days (d)
weeks (wk)
wk to swk to minwk to hwk to d
Common questions
Is a day always 86400 seconds?
For this site's purposes, yes — civil timekeeping defines the day as 86,400 SI seconds. Leap seconds adjust the clock, not the unit.
How many work hours is a full-time year?
About 2080 hours in the US (40 h × 52 weeks). The hours↔weeks pages show that arithmetic too.
Why 60 and 24?
Base-60 counting comes from Babylonian astronomy; 24 hours divides the day into12 double-hours of night and day. The factors are conventions, but they are exact ones.