Age on Other Planets Calculator
Enter your birth date to see how old you are on each planet.
Your numbers
Your results
Earth years
Earth years
—
Earth days lived
—
Mercury years
—
Venus years
—
Mars years
—
Jupiter years
—
Saturn years
—
Uranus years
—
Neptune years
—
Pluto years
—
Age on Other Planets Calculator by TheCalcTools
How the Age on Other Planets Calculator works
A planet’s year is the time it takes to orbit the Sun once. Your age there is the number of Earth days you have lived divided by the length of that planet’s year in Earth days.
Mercury’s year is 88 days, so you have had many more Mercury birthdays; Neptune takes 59,800 days (about 164 Earth years), so no one has yet lived one Neptune year.
The formula
Age on a planet = days lived ÷ orbital period (days)
Worked example
Using the default values shown in the calculator:
| Date of birth | 1995-06-15 |
|---|---|
| Today | 2026-10-17 |
- Born 15 June 1995, on 17 October 2026 you have lived 11,447 days.
- That is 16.66 Mars years and 2.64 Jupiter years.
Result:
| Earth years | 31.34 |
|---|---|
| Earth days lived | 11,447 |
| Mercury years | 130.08 |
| Venus years | 50.94 |
| Mars years | 16.66 |
| Jupiter years | 2.64 |
| Saturn years | 1.07 |
| Uranus years | 0.37 |
| Neptune years | 0.19 |
| Pluto years | 0.13 |
Frequently asked questions
What is a year on Mars?
687 Earth days, about 1.88 Earth years.
Sources and further reading
Related calculators
More in Physics · All calculators
This calculator gives estimates for information only. Check important results independently before you rely on them. See our disclaimer.