Leap Year Checker

Calculator Tools

Is it a leap year? Next leap year too

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Year
Full guide, 3 min readWhy 2100 is not a leap year (and 2000 was)Read the story behind this tool →
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History

All history →

Leap Year Checker — at a glance

Find out in a second whether a year has 366 days.

Input
Year 2028
Run
Result
Leap year ✓
Next: 2032

How to use it — step by step

Any year from 1 to 9999.

1

Enter your values

Fill in the boxes. Sensible example values are already filled in for you.

2

Check Year

Press the button. The answer is worked out instantly on your device.

3

Read or copy the result

See the big answer and the extra details, then press Copy to keep them.

Pro tips

Small things that make the result better.

✦Century years like 1900 are not leap years unless divisible by 400.
✦People born on 29 February celebrate in leap years.
✦The next leap year is always 4 years later, except at some centuries.

Quick facts

Ruledivisible by 4
Centuryby 400 rule
Next & previousleap years
Freeno signup

Frequently Asked Questions

Why do we have leap years?+

A year is about 365.2422 days long. An extra day every four years keeps the calendar in line with the seasons.

Is 2100 a leap year?+

No. It is divisible by 100 but not by 400.

Is my data safe?+

Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.

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