Leap Year Calculator
Check whether a year is a leap year and list nearby ones.
2026
Not a leap year
365 days
February has
28 days
Previous leap year
2024
Next leap year
2028
ShowHide the working
- 1Divisible by 4? no
- 2Divisible by 100 but not 400? no
- 3→ common year
Formula
leap if divisible by 4, except centuries not divisible by 400How it works
Whether a year is a leap year. Every fourth year is, except century years unless they divide by 400 — so 2000 was, 1900 wasn't.
Example
2026 is not a leap year; the next one is 2028.
About the Leap Year Calculator
Check whether a year is a leap year and list nearby ones. It sits in the Date & Time section of NWS Calc, a free collection of calculators that run entirely in your browser. There is no signup, no paywall and no tracking — open the page, enter your numbers, get an answer.
Frequently asked questions
- Is the Leap Year Calculator free to use?
- Yes. Every calculator on NWS Calc is completely free, with no signup, no usage limits and no ads.
- Does my data leave my device?
- No. The Leap Year Calculator runs entirely in your browser using JavaScript. Nothing you type is uploaded, logged or stored on a server.
- Can I use the Leap Year Calculator on my phone?
- Yes. The page is fully responsive and works in any modern mobile or desktop browser — there is nothing to install.
- What else is in Date & Time?
- Ages, durations, business days, countdowns and time zones. You can browse the full Date & Time category for related calculators.