Birthday Calculator: When Is My Birthday?

Find your next birthday

Your next birthday is the next calendar date that matches your birth month and day. This calculator also counts the days between today and that date, so you can see exactly how long you have to wait.

What if my birthday is today?

If the month and day match today, the calculator tells you it is your birthday. The countdown is zero days.

Leap-day birthdays

For a February 29 birthday in a year without February 29, this calculator uses February 28 for countdown purposes. People celebrate leap-day birthdays in different ways, and local legal rules can differ.

More birthday calculations

You can also find your half birthday, see what day of the week you were born, or calculate big age milestones.

Birthday calculator or age calculator?

An age calculator answers how old you are today. A birthday calculator looks forward instead. It finds the next date your birthday arrives, the weekday it lands on and the age you will be on that date.

If you want both answers, start with the main age calculator. It shows your exact age today and also gives a short next-birthday summary.

How the birthday countdown is counted

The countdown uses calendar days from today to the next matching month and day. If your birthday is tomorrow, the result is one day. If it is today, the result is zero days.

The weekday is calculated from the actual calendar date, so you can see whether your next birthday is on a school day, workday or weekend.