Type a value, choose the units and get an instant answer. The table below the converter shows the same value in every time unit, and all factors use exact or internationally standard definitions.
How to convert time units
- Enter the value.
- Pick the unit to convert from and to (⇄ swaps them).
- Read the result, formula and the table of all units.
Time units
| Unit | Symbol | About |
|---|---|---|
| Millisecond | ms | One thousandth of a second. |
| Second | s | The SI base unit of time. |
| Minute | min | 60 seconds. |
| Hour | h | 60 minutes or 3,600 seconds. |
| Day | d | 24 hours. |
| Week | wk | 7 days. |
| Month | mo | An average Gregorian month of 30.436875 days. |
| Year | yr | An average Gregorian year of 365.2425 days. |
Popular time conversions
Hours to Minutes · Minutes to Hours · Seconds to Minutes · Minutes to Seconds · Days to Hours · Hours to Days · Weeks to Days · Months to Years · Years to Days
Frequently asked questions
How accurate is the time converter?
It uses exact definitions where they exist and shows up to 10 significant figures, more than enough for everyday, school and engineering use.
Updated October 2026 · Built and tested by Sharjeel Tahir · How our tools are tested