Age Calculator
Find out your exact age
Years old
Months · Days
Enter your date of birth to see your age
Days lived
Hours lived
Minutes lived
Heartbeats (approx)
Born on
Weeks lived
Hours asleep
Next Birthday
Days to go
What is the age calculator?
Enter your date of birth; the calculator shows your age in years, months, and days, and the date of your next birthday.
How to use the age calculator
Type or pick your date of birth. The result updates as you change it. The age is computed against your local date right now.
Common questions
- How are partial years counted?
- Your age is the number of full birthdays you have had. So someone born on March 1, 2000 turns 26 on March 1, 2026; on February 28, 2026 they are still 25.
- How are leap-year birthdays handled?
- If you were born on February 29, your age increments on March 1 in non-leap years.
- Is my date of birth sent to the server?
- No. The calculation runs entirely in your browser; your date stays on your device.
Tips
For a child under one, the months-and-days view is the relevant unit; the "X years" reading is always zero until the first birthday. The "days until next birthday" line doubles as a countdown without needing a separate page.