Quick guide
Try an example
You enter
- Year
2024
- Month (1–12)
2
You get
29
How it works & limits
Enter a Gregorian year from 1 to 9999 and a month from 1 to 12. February follows the leap-year rule.
Find how many days a month has in a given year.
Numbers Stateless2024
2
29
Enter a Gregorian year from 1 to 9999 and a month from 1 to 12. February follows the leap-year rule.