Discover how old you would be on other planets in our solar system
Your age varies on different planets because each planet takes a different amount of time to orbit the Sun (a year). For example, Mercury orbits the Sun every 88 Earth days, so you'd be much older there!
Your planetary ages will appear here
Enter your Earth age and click "Calculate My Age on Planets"
A planetary year is the time it takes for a planet to complete one orbit around the Sun. This varies dramatically across our solar system due to differences in orbital distance and speed.
The closer a planet is to the Sun, the faster it orbits (following Kepler's laws of planetary motion). This means inner planets like Mercury have much shorter years than outer planets like Neptune.
| Planet | Orbital Period (Earth Days) | Comparison to Earth Year | Interesting Fact |
|---|---|---|---|
| Mercury | 88 days | 0.24 Earth years | A day on Mercury is longer than its year! |
| Venus | 225 days | 0.62 Earth years | Venus rotates backwards compared to other planets |
| Earth | 365.25 days | 1 Earth year | The only planet known to support life |
| Mars | 687 days | 1.88 Earth years | Has the largest volcano in the solar system |
| Jupiter | 4,333 days | 11.86 Earth years | Has at least 79 moons |
| Saturn | 10,759 days | 29.46 Earth years | Famous for its spectacular ring system |
| Uranus | 30,687 days | 84.01 Earth years | Rotates on its side compared to other planets |
| Neptune | 60,190 days | 164.8 Earth years | Has the strongest winds in the solar system |
A single day on Mercury (sunrise to sunrise) lasts 176 Earth days - twice as long as its year!
Despite being the largest planet, Jupiter has the shortest day - only 9 hours and 56 minutes!
On Venus, a day is longer than a year! It takes 243 Earth days to rotate once, but only 225 days to orbit the Sun.
Pluto was reclassified as a dwarf planet in 2006. It takes 248 Earth years to orbit the Sun!