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Weight Calculator
Weight Calculator
W = m × g — weight, force, and planetary gravity converter
W = m × g | g(Earth) = 9.80665 m/s²
Weight on Earth
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In Newtons
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In kN
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In lbf
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In dyne
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Mass (kg)
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Mass (lb)
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Weight on Other Planets (N)
Mercury
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Venus
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Moon
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Mars
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Jupiter
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Saturn
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Uranus
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Neptune
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About the Weight Calculator
Find your weight, which is the force of gravity on your mass, on Earth and on other planets and the Moon.
How to use the Weight Calculator
- Enter your Mass and choose the unit: kg, g, lb, oz or stone.
- Press Calculate to see your weight in newtons and pounds-force on Earth and other worlds.
Formula and method
W = m × g. Surface gravity in m/s²: Earth 9.81, Moon 1.63, Mars 3.71, Jupiter 24.79.
Worked example
A 70 kg person weighs 70 × 9.80665 = 686.5 N on Earth and about 114 N on the Moon.
Tips
- Mass does not change from place to place, but weight does.
- A bathroom scale measures force but is calibrated to show mass.
Frequently Asked Questions
In everyday language weight and mass are used interchangeably, but scientifically kilograms measure mass and newtons measure weight.