Days Until Your Birthday Calculator
Count down to your next birthday. Enter your birth date and see how many days are left, the number of full weeks, and the age you’ll be turning.
How It Works
Formula
Variables, symbols and units
- The next occurrence of your birth month and day
Calculation method explained
The calculator takes your birth month and day, finds the next time it occurs on or after today, and counts the whole days in between.
Frequently Asked Questions
Which birthday does it count to?
Your next birthday: the next occurrence of your birth month and day on or after today. On the day itself the countdown reads 0.
What about leap-day birthdays?
A 29 February birthday is counted to 1 March in non-leap years, the common convention.
Is my birth date stored?
No. Everything is computed in your browser; nothing is sent anywhere or saved.