Leap Year Calculator

Free Leap Year Calculator

Use this free leap year calculator to instantly check whether any year is a leap year, see the exact rule that applies, and find the nearest leap years before and after it.

A leap year has 366 days instead of 365, with an extra day added to February, to keep our calendar in sync with Earth's orbit around the sun.

How to Use the Leap Year Calculator

• Select a year.
• Click Check Leap Year.
• View whether it's a leap year, the reason why, and the nearest leap years instantly.

Features

• Checks any year for leap year status instantly.
• Explains exactly which rule applies.
• Shows the next and previous leap years.
• Mobile-friendly with print, share, copy, and download options.

Frequently Asked Questions

What is a leap year?

A leap year is a year with 366 days instead of the usual 365, with the extra day added as February 29th. Leap years keep our calendar aligned with Earth's actual orbit around the sun, which takes about 365.2425 days.

How is a leap year determined?

A year is a leap year if it is divisible by 4, except for century years, which must be divisible by 400. For example, 2000 and 2024 are leap years, but 1900 and 2100 are not.

Why do we have leap years?

Earth takes approximately 365.2425 days to orbit the sun, not exactly 365. Without leap years, our calendar would slowly drift out of sync with the seasons over time.

Is this calculator free?

Yes, this leap year calculator is completely free to use with no sign-up required.

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