Age on Other Planets Calculator

Enter your age on Earth to see how old you would be on other planets. Results are based on orbital periods (planetary years).

Decimals allowed (e.g., 29.5).
We’ll visually highlight it.
A “year” is one full orbit around the Sun. Planets farther away have much longer years.
Age = Earth years ÷ planet year length.
How we calculate

We divide your Earth age by each planet’s orbital period (in Earth years).