How old are you on
other planets?
A year is one trip around the Sun — and each planet takes a different time. Enter your date of birth to see.
📌 Date shared with the other calculators.
About your age on other planets
A year is one trip around the Sun — and every planet takes a different amount of time. This calculator shows how old you’d be on Mercury, Venus, Mars, Jupiter, Saturn, Uranus and Neptune, using each planet’s orbital period.
Enter your date of birth to see how the years stretch or shrink across the Solar System.
How old am I on Mars?
Enter your birth date and the calculator divides your age by each planet’s year length, so you instantly see your age on Mars, Jupiter, Neptune and the rest.
Why is my age different on each planet?
Because a “year” is one orbit of the Sun, and each planet orbits at a different speed — a year on Neptune lasts about 165 Earth years.
Fancy exploring another?