Days in Month Calculator — How Many Days in a Month?
The Days in Month Calculator tells you how many days are in any month of any year, correctly accounting for leap years. February has 28 days in regular years and 29 in leap years. Enter a month and year to get the exact day count instantly.
How to Use This Calculator
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Enter the month number (1–12) and the year.
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Click Calculate to see how many days are in that month.
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February returns 29 for leap years and 28 otherwise.
Frequently Asked Questions
A year is a leap year if it is divisible by 4, except century years (divisible by 100) must also be divisible by 400. So 2000 and 2400 are leap years; 1900 and 2100 are not. Leap years have 366 days (February has 29).