Weight Calculator

A mass and a location — the actual force of weight there.

kg
Weight on Earth
686.5 N
In pounds-force
154.32 lbf
Relative to Earth
100.0%

Weight is a force (mass × local gravity), so the same mass weighs differently depending on where it's measured — about 1/6th on the Moon, but nearly 2.5x heavier on Jupiter.

A worked example

A 70 kg mass weighs about 686.5 N on Earth, but only about 113.4 N on the Moon — roughly 16.5% of its Earth weight.

Frequently asked questions

Why would my weight on the Moon be so much lower?

The Moon's gravity is only about 1/6th of Earth's, so an object with the same mass exerts roughly 1/6th the weight (force) there — astronauts can jump far higher on the Moon despite having identical mass to on Earth.

Why is weight measured in newtons here instead of pounds?

Newtons are the standard scientific unit of force, which is technically what weight is — pounds-force is also shown as a more familiar everyday reference, but the newton is the more precise physics unit.