Age on Other Planets
Enter your birth date to see how old you are on Mercury, Mars, Jupiter, Saturn and beyond — with your next birthday on each planet. Uses NASA orbital data.
Calculating…
How old am I on Mercury?
Closest to the Sun, Mercury races around its orbit in just 88 Earth days — so you rack up planet-years fast.
A year on Mercury lasts 87.969 Earth days (about 0.24 Earth years), so your Mercury age is simply your age in Earth days divided by 87.969. Enter your birth date above to see it, plus the date of your next Mercury birthday. A day on Mercury (one rotation) lasts about 1,407.6 Earth hours.