Age on Other Planets Calculator

A year is one orbit around the Sun — and every planet orbits at a different speed. Find your age on other worlds.

The math behind it

age on a planet = Earth age ÷ that planet's orbital period (in Earth years). Mars takes 1.88 Earth years per orbit, Jupiter 11.86.

Worked Example

30 Earth years → ~16 Mars years, ~2.5 Jupiter years.

Frequently Asked Questions