Age Calculator for Earth & Beyond
Discover your age on Earth, Mars, Jupiter, and more! See your age in years, months, days, and countdown to your next birthday.
How to Use the Age Calculator
Enter Your Birthday
Select your date of birth. This is the only required step to begin your age journey.
Pick a Future Date
Want to know how old you'll be on a special anniversary? Select any date to find out. (Optional)
Discover Your Cosmic Age
Click "Calculate" to see your age on other planets, a live birthday countdown, and more fun facts.