Birthday Countdown
Find out how long until your next birthday.
Runs in your browser, nothing is stored · Calendar-exact, leap years included · Reviewed November 10, 2026 · How we calculate
How long until my birthday? Enter your date of birth and look for “Next birthday in” on the result. It shows the months and days between today and your next birthday.
How the countdown works
The calculator finds the next occurrence of your birth month and day after today, then measures the gap in whole months and days.
Example: with a birthday on 15 August, the next birthday from 10 November 2026 is 15 August 2027. That is 9 months and 5 days away, or 278 days.
29 February birthdays
In years that are not leap years, a 29 February birthday is observed on 28 February by this calculator.
Frequently asked questions
How many days until my birthday?
Enter your date of birth. The result shows the time left as months and days. For the number of days alone, convert the months using the real calendar.
What if my birthday is today?
If today is your birthday, the countdown moves to the following year.
Can I count down to someone else’s birthday?
Yes. Enter their date of birth to see their age and the time until their next birthday.
Does it work for any date, not just birthdays?
For counting days to an event such as a holiday, use the days between dates calculator.
More calculators
- Age Calculator – Exact age in years, months and days
- How Old Am I? – Your age today from your date of birth
- How Many Days Old Am I? – Total days, hours and seconds lived
- Age Difference Calculator – The gap between two people or dates
- Days Between Dates – Exact days between any two dates