Birthday Calculator: When Is My Birthday?

When is my birthday?

Your birthday comes on the same month and day as your date of birth each year. Enter your birth date and this calculator finds the next time that date arrives, how many calendar days are left and what day of the week it falls on.

If your birthday is today, the countdown is zero. If it has already passed this year, the calculator automatically moves to next year's birthday.

How many days until my birthday?

The countdown measures calendar days from today to your next birthday. If your birthday is tomorrow, the answer is one day. A birthday several months away is counted through the real lengths of those months rather than using an average month.

The result also shows the remaining time in weeks and days, which makes a longer countdown easier to picture.

What day of the week is my next birthday?

The calculator checks the actual future date and gives its weekday. That can help when you are planning a birthday dinner, party or weekend away.

If you are curious about the day you were born, use the birth weekday calculator. It checks your original birth date instead of your next birthday.

What happens with February 29 birthdays?

For a February 29 birthday in a year without February 29, this site uses February 28 for the countdown. Leap-day birthday traditions vary, and legal rules can differ by location, so treat this as a calendar convention for the calculator rather than a legal definition.

Birthday calculator or age calculator?

The age calculator answers how old you are today. The birthday calculator looks forward to the next birthday and tells you when it arrives, how many days remain and how old you will turn.

If you want to check your age on a completely different past or future date, use the age on date calculator. If you are comparing two people's birthdays instead, the age difference calculator finds the exact gap between them.

More fun facts about your birthday calendar

The result also looks farther ahead. It finds your next birthday on a Saturday or Sunday and the next birthday that falls on the same weekday as the day you were born. Because weekdays shift by one day in a normal year and usually two days across a leap day, these dates move around the calendar in a pattern rather than staying fixed.

Your next round birthday is the next age divisible by five. That could be 25, 30, 35, 40 or another five-year age. It gives you another date to look forward to without treating any particular age as more important than another.

More birthday dates to discover

Your regular birthday is only one date worth checking. You can find your next half birthday or use the age milestone calculator for dates such as your 10,000th day or one-billionth second. If you know someone's age but not their year of birth, try the Birth Year Calculator.