Question 1

How is planetary age calculated?

Accepted Answer

Your planetary age is calculated by dividing your age in Earth days by the number of days it takes each planet to orbit the Sun. For example, Mars takes 687 Earth days to orbit, so your Martian age is your Earth days divided by 687.

Question 2

Why am I so old on Mercury?

Accepted Answer

Mercury orbits the Sun in just 88 Earth days, so you complete many more 'years' on Mercury than on Earth. A 30-year-old on Earth would be about 124 Mercury years old!

Question 3

Why is Pluto included?

Accepted Answer

While Pluto was reclassified as a dwarf planet in 2006, it remains a beloved part of our solar system. Your age on Pluto would be very small — Pluto takes 248 Earth years to orbit the Sun!

Question 4

What is an orbital period?

Accepted Answer

An orbital period is the time it takes for a planet to complete one full orbit around the Sun. Earth's orbital period is 365.25 days (one year). Each planet has a different orbital period.

Your Age on Other Planets

Orbital Periods

Your Age on Other Planets

Related Calculators

Orbital Periods