Your weight on Neptune
Your mass does not change when you travel. Your weight does, because weight is a force and it depends on the local gravitational field.
Your weight there, in kilograms-force
80.495
- Your weight as a force
- 789.38
- Your weight in pounds-force
- 177.46
- Surface gravity
- 11.2769 m/s2
- Gravity relative to Earth
- 1.149 92
- How high that jump would take you
- 0.435
- Time for something to fall one metre
- 0.421 s
- Your weight on Earth for comparison
- 686.47
Show the working
- Your mass = 70
- How high you can jump on Earth = 0.5
- gm = 6.836529e15 = 6 836 530 000 000 000
- radius = 2.4622e7 = 24 622 000
- Surface gravity = 6 836 530 000 000 000 / 24 622 000^2 = 11.2769
- Gravity relative to Earth = 11.2769 / 9.80665 = 1.149 92
- Your weight as a force = 70 * 11.2769 = 789.382
- Your weight there, in kilograms-force = 789.382 / 9.80665 = 80.4945
- Your weight in pounds-force = 789.382 / 4.4482216152605 = 177.46
- How high that jump would take you = 11.2769 > 0 ? 0.5 * 9.80665 / 11.2769 : 0 = 0.434 812
- Time for something to fall one metre = 11.2769 > 0 ? sqrt(2 * 1 / 11.2769) : 0 = 0.421 134
- Your weight on Earth for comparison = 70 * 9.80665 = 686.466
Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.
Scenarios & local history
Compare a saved scenario
Recent calculations
The formula
- surface gravity g = GM / r^2
- weight = mass x g
- jump height scales inversely with gravity for the same take-off energy
The gravitational constant G is the least precisely known fundamental constant, so results here are reported as rounded rather than exact.
Kilograms-force is what a bathroom scale reads. It is a force, not a mass, which is why the number changes and your mass does not.
Where the numbers come from
- GM and mean radius from planetary ephemeris and spacecraft tracking solutions.