Time is relative! Enter your birthdate to see how old you would be on Mercury, Mars, Jupiter, and beyond.
years old
We mark our age by how many times we've orbited the Sun on Earth. But every planet travels at a different speed and distance.
Mercury zips around the sun in just 88 days, meaning you'd have a birthday there every 3 months! Meanwhile, Pluto takes 248 Earth years to complete one orbit, so you wouldn't even be 1 year old there yet.
| Planet | Orbital Period (Earth Years) | Days per Year |
|---|---|---|
| Mercury | 0.24 | 88 days |
| Venus | 0.62 | 225 days |
| Earth | 1.00 | 365 days |
| Mars | 1.88 | 687 days |
| Jupiter | 11.86 | 4,333 days |
| Saturn | 29.46 | 10,759 days |
| Uranus | 84.01 | 30,687 days |
| Neptune | 164.8 | 60,190 days |
| Pluto | 248.0 | 90,560 days |
The Moon orbits Earth, not the Sun. However, we calculate "Moon Age" based on its orbit around Earth (approx 27.3 days), which is fun to see!
Yes, it uses the official sidereal orbital periods of the planets. It assumes you were born on that planet at the same moment you were born on Earth.
