Time and Duration Converter
Convert seconds, minutes, hours, days, weeks, fortnights, average months and average years quickly and accurately.
How is it calculated?
How does time and duration conversion work?
Time can be measured in seconds, minutes, hours, days and other units. ConvertAll uses the second (s) as its reference unit. Each duration is converted into seconds and then into the selected destination unit using conversion factors. One minute equals 60 seconds, one hour equals 3600 seconds, and one day equals 86,400 seconds. For months and years, this converter uses average Gregorian calendar durations: 365.2425 days per year and 30.436875 days per month. These averages are useful for converting approximate durations, but not for calculating exact calendar dates.
Conversion examples
- 1 minute = exactly 60 seconds.
- 1 hour = exactly 60 minutes.
- 1 day = exactly 24 hours.
- 1 week = exactly 7 days.
- 1 fortnight = exactly 14 days.
- 1 average Gregorian month = 30.436875 days.
- 1 average Gregorian year = 365.2425 days.
- 1 millisecond = 0.001 seconds.
Frequently asked questions
How many minutes are in an hour?
One hour equals exactly 60 minutes or 3600 seconds.
How do you convert hours to minutes?
Multiply the number of hours by 60. For example, 2.5 hours equals 150 minutes.
How many seconds are in a day?
A fixed-duration day contains 24 hours, which equals exactly 86,400 seconds.
How many hours are in a week?
A seven-day week contains exactly 168 hours.
How many days are in a fortnight?
In this converter, one fortnight is a fixed period of 14 days, equivalent to two weeks.
How many days are in a month?
Calendar months have 28, 29, 30 or 31 days. For duration conversions, ConvertAll uses an average Gregorian month of 30.436875 days.
How many days are in a year?
A calendar year can have 365 or 366 days. The average Gregorian calendar year contains 365.2425 days.
What is the difference between milliseconds, microseconds and nanoseconds?
One millisecond equals 0.001 seconds, one microsecond equals 0.000001 seconds, and one nanosecond equals 0.000000001 seconds.
Can I use this converter to calculate a future date?
This converter calculates durations, not calendar dates. Adding months or years to a specific date requires accounting for varying month lengths, leap years and, where applicable, daylight saving time changes.