Time Unit Converter
Convert between seconds, minutes, hours, days, weeks, months and years.
Good to know. A year is 365.2425 days on average, which is why February gets an extra day most leap years.
How it works
In plain words
Convert into seconds, then into the target unit. A minute is 60 seconds, an hour 60 minutes, a day 24 hours and a week 7 days. A year is 365.2425 days on average in the Gregorian calendar, and a month is a twelfth of that.
The formula
1 min = 60 s · 1 h = 3,600 s · 1 day = 86,400 s 1 week = 604,800 s · 1 year = 365.2425 days · 1 month = 30.436875 days
Worked example
A week is 7 × 24 × 60 = 10,080 minutes.
Sources
Sources checked September 30, 2026. 5 automated tests check its answers on every change.
About the time unit converter
Seconds, minutes, hours, days and weeks convert exactly: 60 seconds to a minute, 60 minutes to an hour, 24 hours to a day and 7 days to a week. So a day is 1,440 minutes or 86,400 seconds, and a week is 168 hours.
Months and years are different, because they aren’t all the same length. A year has 365 or 366 days, and a month anywhere from 28 to 31. For conversions, this calculator uses the Gregorian calendar’s average: 365.2425 days a year, since leap years come every four years except most century years, and 30.436875 days a month. That gives 8,765.82 hours in an average year, against 8,760 in a 365-day year.
If you need an exact number of days between two dates, or the time between two clock times, use the days between dates or hours between times calculators instead, which count the real calendar.
The table below the result shows your value in every unit at once, which is handy for questions like how many seconds are in a month, or how many weeks are in a year: 52.18 on average.
Questions people ask
How many minutes are in a day?
1,440: 24 hours × 60 minutes.
How many hours are in a year?
8,760 in a 365-day year and 8,784 in a leap year; 8,765.82 on average.
How many seconds are in a day?
86,400: 24 × 60 × 60.
How many weeks are in a year?
52 weeks and 1 day, or 52 weeks and 2 days in a leap year: about 52.18 on average.