Birthday Countdown Calculator

See exactly how many days are left until your next birthday — and how old you will turn.

Your age
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Total months
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Total weeks
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Total days
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Days to birthday

Enter a date of birth to see your exact age.

Counting down to your birthday

A birthday countdown measures the time from today until the next occurrence of your birthday. If your birthday has already passed this year, the count runs to next year's date. The calculator works from your date of birth and the calendar, so leap years and month lengths are handled automatically.

Real-world example

If today is 10 June and your birthday is 20 March, this year's has passed, so the countdown runs to next 20 March — about 283 days away. You can also see exactly how old you will turn on that date.

Plan ahead

A countdown is handy for planning parties, gifts and milestones — and for the simple fun of knowing how long until the big day. Combine it with your age in days to mark unusual milestones too.

Frequently asked questions

Find the number of days from today to the next occurrence of your birthday. If it has passed this year, the count runs to next year. The calculator does this from your date of birth.

The countdown automatically runs to your birthday next year.

Yes. It uses real calendar dates, so leap years and varying month lengths are handled automatically.

Yes. It runs entirely in your browser.