Time Unit Converter
Convert between seconds, minutes, hours, days, weeks, months and years.
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Convert units of time
This time converter switches between milliseconds, seconds, minutes, hours, days, weeks, months, and years. It is handy for project planning, working out durations, programming, and schoolwork. Months and years use average lengths (a month is about 30.44 days; a year is 365.25 days) so longer conversions stay accurate over time.
Common time conversions
| From | To | Result |
|---|---|---|
| 1 hour | seconds | 3,600 s |
| 1 day | hours | 24 h |
| 1 week | hours | 168 h |
| 1 year | days | 365.25 days |
For working out the time or days between two calendar dates, try our date calculator and age calculator.
Frequently asked questions
How many seconds are in a day?
There are 86,400 seconds in a day (24 hours × 60 minutes × 60 seconds).