Age on Other Planets Calculator
See how old you'd be on Mars, Jupiter and beyond.
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.
FAQ
Why are you 'older' on Mercury?
Mercury orbits the Sun in just 88 days, so you rack up far more 'years' there.