Birthday Countdown Calculator
Counts the days to your next birthday and shows what day it lands on.
Next birthday
—
Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
Days to go — days
Date —
Falls on a —
Age you will turn —
Weeks and days —
Reading this —
The formula
days to go = next birthday − today
The next birthday is the first anniversary of the birth date on or after the day you are counting from.
What to watch out for
If the birthday is today, the count is 0.
Frequently Asked Questions
When is a 29 February birthday celebrated in other years?
Here, on 28 February. Someone born on 29 February 2000 next has a birthday on 28 February 2026, counting from 1 March 2025. Some places use 1 March in law.
Why does my birthday fall on a different day each year?
A year is 52 weeks and 1 or 2 days. 1 June was a Saturday in 2024 and a Sunday in 2025.