What happens if today is my birthday?

The countdown resets to show 365 days (or 366 in a leap year) until your next birthday the following year, and a congratulations message appears.

Does this account for leap years?

Yes. The tool calculates the exact date of the next birthday and handles February 29 birthdays by showing March 1 as the birthday in non-leap years.

Is the countdown accurate to the second?

The countdown uses your device's local clock and updates every second. It counts down to midnight at the start of the birthday date in your local time zone.

How is age calculated?

Age is the number of full years from the birth date to today. If today is before this year's birthday, the age shown is one less than the upcoming birthday age.

Can I use this for someone else's birthday?

Yes. Enter any birth date and the tool works for any person. The date is not stored or sent anywhere — it stays in your browser.

Next Birthday Countdown

Enter a birth date and see exactly how many days, hours, minutes, and seconds remain until the next birthday, plus current age.

Enter Birth Date

Birth date

Enter a birth date to start the countdown

The timer updates every second

Summary

Enter a birth date and see exactly how many days, hours, minutes, and seconds remain until the next birthday, plus current age.

How it works

Enter a birth date using the date picker or type it in.
The tool calculates today's date and finds the next occurrence of that birthday.
A live countdown shows days, hours, minutes, and seconds remaining.
Current age in years is displayed alongside the exact upcoming birthday date.
The countdown refreshes every second automatically.

Use cases

Find out how many days are left until your own birthday.
Plan a surprise party by tracking exactly how much lead time you have.
Check the current age and upcoming birthday of a friend or family member.
Share a countdown link with someone to build excitement for their birthday.
Settle debates about whose birthday is coming up sooner.

Frequently Asked Questions

Last updated: 2026-09-22 · Reviewed by Nham Vu