Time Converter
Enter an amount of time, choose the unit it is in and the unit you want. You get the converted time and a table of the same time in every unit.
Your numbers
How we calculate it
Every time is turned into seconds and then into the unit you want. A minute is 60 seconds, an hour is 3,600 seconds, a day is 86,400 seconds and a week is 604,800 seconds. Months and years do not have a fixed length, so the average Gregorian calendar is used: a year is 365.2425 days (31,556,952 seconds) and a month is one twelfth of that, 30.436875 days (2,629,746 seconds).
So 1 year is 365.2425 days, or 12 average months, and 1 week is exactly 7 days. Results are shown to 12 significant digits.
Assumptions and limits
- A real calendar year has 365 or 366 days, and a real month has 28 to 31. The averages are best for long spans, such as converting 10 years into days.
- A day here is exactly 24 hours. Leap seconds and daylight saving changes are not included.
- To count the days between two real dates, use the days between dates calculator, which follows the actual calendar.
Frequently asked questions
How many days are in a year?
A calendar year has 365 days, or 366 in a leap year. The average over the Gregorian calendar is 365.2425 days, which is what this converter uses.
How many seconds are in a day?
There are 86,400 seconds in a day, from 24 hours of 60 minutes of 60 seconds.
How long is a month?
It depends on the month. The average is 30.436875 days. For a specific month use the real number of days, which the days between dates calculator handles.
Related calculators
- Time CalculatorEnter two times as days, hours, minutes and seconds, and choose to add them or subtract the second from the first.
- Days Between Dates CalculatorPick two dates to see exactly how many days apart they are, along with the same gap in weeks, in years-months-days and in working weekdays.
- Add Days to a Date CalculatorStart with a date and add or subtract any number of days, weeks, months or years to find the resulting date.
- Unix Timestamp ConverterPick a direction.
Worked example (a fixed example using the starting numbers, it does not change as you type)
Inputs: Value to convert = 1; From = year (average) (yr); To = day (d).
- Result 365.2425 d
- Conversion 1 yr = 365.2425 d
Embed this calculator
Add this calculator to your own page. Paste the code where you want it. The small link keeps credit to the source.