Days in a Month Calculator
Find how many days are in any month. Pick a month and year and the calculator shows the number of days, handles February in leap years, and shows the weekday the month starts and ends on. Free, leap-year accurate, and instant in your browser.
See how many days are in a given month and year. Pick the month and year and the calculator shows the day count, handles February in leap years, and shows the weekday the month starts and ends on. It answers how many days in February, and the length of any month you need for billing or planning.
- Leap-year accurate
- 100% free
- No sign-up, no app
- Instant as you type
- Works offline after first load
How to use it
- 1
Pick the month
Choose the month you want to check.
- 2
Enter the year
Type the year, which matters for February in leap years.
- 3
Read the answer
See the number of days and the weekdays the month starts and ends on.
When it comes in handy
Billing and rent
Confirm the day count for a month when working out a daily rate or a pro-rata charge.
Planning a calendar
Check how many days a month has and which weekday it begins on before laying it out.
February checks
See whether a particular February has 28 or 29 days.
Instant, accurate & 100% in your browser
The calculation runs right here in your browser, counting the real calendar so leap years and month lengths come out right. Nothing you type is sent to a server, there is no sign-up and no limit, and once the page has loaded it keeps working even with no connection.
Frequently asked questions
- How many days are in each month?
- Seven months have 31 days: January, March, May, July, August, October and December. Four have 30 days: April, June, September and November. February has 28 days, or 29 in a leap year. The calculator returns the exact count for the year you choose.
- How many days are in February?
- February has 28 days in a common year and 29 days in a leap year. A leap year is one that divides by 4, except for century years, which must also divide by 400. Enter a year and the calculator applies this rule for you.
- Is there a trick for remembering month lengths?
- Yes, the knuckle method. Make a fist and count across the knuckles and the dips between them, starting with January on the first knuckle. Every month that lands on a knuckle has 31 days, and every one that lands in a dip has 30, except February. It is a quick way to check without the calculator.
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