Planets travel at different speeds along their orbits around the Sun. Said orbits also become exponentially longer the farther away the planet is from the Sun. As a result, the time it takes for each planet in the Solar system to complete one trip around the Sun, or a year as we commonly say, varies greatly.
The calculator below will help you find out what your age would be on Mercury. Below, you will find a more detailed explanation of how this is calculated and the numbers that factor into it.
Age on Mercury Calculator
Results for a 100 lb person aged 10 years.
Mercury
Age on Mercury41.52 years
Weight on Mercury37.72 lb
- Next birthday
- Add your birth date
- Jump
- 4.35 ft
- Year
- 88 Earth days
- Day
- 175.9 days
Your age on the other worlds
- Venus16.25 years90.42 lb
- Moonn/a16.51 lb
- Mars5.32 years37.82 lb
- Jupiter0.84 years252.70 lb
- Saturn0.34 years106.42 lb
- Uranus0.12 years90.42 lb
- Neptune0.06 years113.66 lb
- Pluto0.04 years6.32 lb
- Sunn/a2,793.07 lb
See your age and weight on every planet →
Homework mode: show the working
Enter a mass in kilograms and an age in years. Every answer below shows the formula with your numbers.
Did you mean Mercury itself?
If you were looking for the world rather than your own numbers, here is how heavy and how old Mercury is, next to Earth.
| Body | Mass | Compared with Earth | Age |
|---|---|---|---|
| Mercury | 3.3 × 1023 kg | About 1/18 of Earth's mass | 4.5 billion years |
| Earth | 5.97 × 1024 kg | The reference: 1 Earth | 4.54 billion years |
Gravity, orbit and rotation figures: NASA NSSDCA planetary fact sheets.
Want the other planets too? See your age and weight on every planet, with the date of your next birthday on each one.
How to Calculate Your Age on Mercury
When we say that we are going to calculate your age on a different planet, what we mean is finding out the number of orbits that the planet has completed in the same amount of time as your age here on Earth.
Calculating your age on Mercury is very simple as we have to do a rule of three. The formula is as follows:
Mercury Age = (Earth Age in Years × Earth’s Orbital Period) ÷ Mercury’s Orbital Period
Worked example: a 12-year-old on Mercury
- Earth’s orbital period is 365.25 days and Mercury’s is 87.97 days.
- Mercury age = 12 × 365.25 ÷ 87.97
- Mercury age = 4,383 ÷ 87.97 = 49.8
A 12-year-old is 49.8 Mercury years old. The shortcut is to multiply your Earth age by 4.15, because Mercury goes around the Sun 4.15 times in one Earth year.
Differences between Earth and Mercury’s orbits
| Earth | Mercury | |
|---|---|---|
| Orbit Length (km) | 940 million | 360 million |
| Rotation Period (Earth days) | 1 (24 hours) | 58.6 |
| Orbital Period (Earth days) | 365.25 | 87.97 |
| Distance to the Sun (million km) | 149.6 | 57.91 |
