# Weight on Other Planets Calculator

URL: https://speedycalculator.com/calculators/physics/weight-on-planets/
Last updated: 2026-10-25

> This calculator shows what you would weigh on the Moon, Mars, Jupiter and other worlds by multiplying your mass by each body’s surface gravity. Your mass stays the same; only the gravitational pull changes.

## Inputs

- Your weight on Earth (kg, lb, g, oz, st)
- Planet or moon

## Results

- Equivalent scale reading
- Weight force
- Compared with Earth

## Formula

```
Weight = mass × surface gravity
```

## Explanation

Weight is the force of gravity on your mass. Smaller bodies such as the Moon pull far less.

### How to use the Weight on Other Planets Calculator

- **Your weight on Earth**
- **Planet or moon**

Results update as you type, and every field accepts the units shown in its menu.

### How it works

Your Earth weight is converted to mass, then multiplied by the surface gravity of the chosen body.

### Inputs explained

FieldWhat to enterYour weight on EarthUnits: kg, lb, g, oz, stPlanet or moonChoose one: Moon (1.62 m/s²), Mercury (3.70), Venus (8.87), Mars (3.721) …

### What each result means

- **Equivalent scale reading** = [Your weight on Earth] × [Planet or moon] ÷ 9.80665
- **Weight force** = [Your weight on Earth] × [Planet or moon]
- **Compared with Earth** = [Planet or moon] ÷ 9.80665 × 100

### Example values

How the main result changes when **Your weight on Earth** changes and everything else stays at the example values above:

Your weight on Earth (kg)Equivalent scale reading (kg)3513.352.519.97026.687.533.210539.814053.1

## Worked example

Inputs — Your weight on Earth: 70 kg; Planet or moon: Mars (3.721).

Results — **Equivalent scale reading = 26.6 kg**; Weight force = 260.5 N; Compared with Earth = 37.9 %.

## Key terms

- **Surface gravity**: Gravitational acceleration at a body’s surface.

## FAQ

**Does my mass change on Mars?**
No, only the force of gravity on it changes.

**Why do gas giants have “surface” gravity?**
It is quoted at the altitude where pressure equals 1 bar.

**What formula does the Weight on Other Planets Calculator use?**
Weight = mass × surface gravity.


## Sources

- [NASA – Planetary fact sheet](https://nssdc.gsfc.nasa.gov/planetary/factsheet/)