Birthday Countdown
Enter your birth date to see how long until your next birthday, plus age and a live time-remaining countdown.
Uses your local timezone. For Feb 29 birthdays, non-leap years are treated as Feb 28 for the next-occurrence countdown.
Privacy: runs locally in your browser. No inputs or results are stored or transmitted.
How it works
This tool finds the next occurrence of your birthday in your local timezone and computes the remaining time. It also shows age information based on the current date.
Examples
- Birth date 1995-08-10 → shows next birthday date, days left, and a live countdown
- Feb 29 birthdays → next occurrence uses Feb 29 on leap years, otherwise Feb 28 (for countdown only)
FAQ
- Does this use my timezone?
Yes. Calculations use your device’s local timezone and update in real time for the live countdown.
- Do you store my birthday?
No. Everything runs locally in your browser. Inputs are not stored or transmitted.
- What if my birthday is today?
It will show “Today” and the countdown will target the next occurrence (next year) once today has passed.
- How is age calculated?
Age is shown as the age you will turn on the next birthday (and optionally your current age if your birthday has already occurred this year).
- What about leap day birthdays (Feb 29)?
You can select Feb 29. In non-leap years, this tool treats the birthday as Feb 28 for the purpose of the next-occurrence countdown (a common convention).