How to use the birthday countdown
Enter your birth date to see the next birthday on or after today. A result of zero means today is your birthday.
How the calculation works
People born on 29 February are shown with a 28 February celebration date in non-leap years. Legal birthday rules may differ by location.
Check your inputs carefully: an incorrect date can change a result. Dates and times are entered using your device settings, and no account is needed. For formal, legal, medical or financial purposes, verify the applicable local rules and official records.
Frequently asked questions
What if my birthday is today?
The countdown displays 0 days and shows today as the celebration date.
Does the calculator account for leap years?
Yes. AgeGlide uses calendar-based calculations and includes 29 February where applicable.
Are the dates I enter uploaded?
No. AgeGlide calculates your results in your browser. Entered dates are not sent to our server for processing.