Everyday tool
Age Calculator
Enter a date of birth to see your exact calendar age, total days lived and next birthday.
Runs in your browser. No upload.
About this tool
Age Calculator made simple.
Choose any date for an age check, including a past or future date. Leap-day birthdays let you choose whether a non-leap-year anniversary falls on February 28 or March 1. Dates are calculated locally without a server.
Common questions
About Age Calculator.
How do I calculate my exact age in years, months and days?
Enter your birth date and choose the date to calculate. The result includes calendar years, remaining months and days, plus total days lived.
Can I calculate how old I was on a past date?
Yes. Set the second date to any date on or after the birth date. For a February 29 birthday, choose how to count it in non-leap years.