Time Converter
Convert between time units like Seconds, Minutes, Hours, Days, and Weeks.
Runs in your browser Your input never leaves your device.
About this tool
Convert time between millisecond, second, minute, hour, day, week, month and year. Seconds, minutes, hours, days and weeks are exact. Months and years use averages: a month is 2,629,746 seconds (30.4369 days) and a year is 31,556,952 seconds (365.2425 days, the average length of a Gregorian year). That means converting months to days will not match a specific calendar month, and a year is not exactly 365 days. Results show up to 8 decimals, switching to scientific notation for very small or large values. For differences between two actual dates use the between dates calculator instead.
How to use it
- Type the value to convert.
- Choose the From and To units.
- Read the result, which updates as you type.
- Use Swap to reverse the units or Copy to copy the result.
Example
The average Gregorian year.
1 year to day
365.2425 d
Common problems
- 1 year gives 365.2425 days, not 365
- The year is an average that includes leap years. Use the between dates calculator for exact counts.
- 1 month is not 30 days
- A month is averaged to 30.4369 days, so results are approximate.
- Daylight saving time
- A day is always 24 hours here. Clock changes are not included.