Age on Different Planet
Find your age on Mars, Jupiter, and more
About the Age on Different Planet
Age on Different Planets shows how old you would be on Mercury, Venus, Mars, Jupiter, Saturn, Uranus and Neptune. Because each planet takes a different time to orbit the Sun, a "year" means something very different on each.
How it works
Your age in Earth years is divided by each planet's orbital period in Earth years. Mars takes about 1.88 Earth years to orbit the Sun, so a 30-year-old is about 15.95 Mars years old. Neptune takes almost 165 Earth years, so nobody alive has completed one Neptune year.
How to Use Age on Different Planet
Enter Your Data
Enter your age in Earth years.
Run the Tool
Press Calculate.
Use the Result
Compare your age on each planet.
Why Use Our Age on Different Planet?
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Frequently Asked Questions
Q. Why am I older on Mercury?
Mercury orbits the Sun in just 88 days, so it completes about four years for every one Earth year.
Q. Does a planet's day length matter?
Not for this calculation. Age is counted in orbits around the Sun (years), not rotations (days).
Q. Where do the orbital periods come from?
They are standard sidereal orbital periods published by NASA.