Enter a year and instantly find out whether it is a leap year, along with a plain explanation of the rule that decides it. A year is a leap year when it is divisible by four, except for century years, which must also be divisible by four hundred, so 2000 qualifies but 1900 does not. This tool applies that logic exactly, tells you whether the year has 365 or 366 days, and lists the next several leap years so you can plan around them. It is useful for anyone checking whether February has 29 days, calculating ages and anniversaries around a leap day, or just settling a trivia question. The year defaults to the current one and updates as you type, and all of the checking happens locally in your browser.
A year is a leap year if it is divisible by four, except century years, which must also be divisible by 400, so 2000 was a leap year but 1900 was not.
A leap year has 366 days because February gains a 29th day.
Yes. It lists the next several leap years so you can plan ahead.
Enter a year and instantly find out whether it is a leap year, along with a plain explanation of the rule that decides it. A year is a leap year when it is divisible by four, except for century years, which must also be divisible by four hundred, so 2000 qualifies but 1900 does not.
Yes. Leap Year Checker is completely free, with no sign-up and no usage limits.
Yes. Leap Year Checker runs in any modern web browser. There is nothing to download or install.
Yes. Leap Year Checker runs entirely on your device in your browser, so nothing you enter is uploaded to a server.