Calculate weight from mass and gravity, or see how much you would weigh on other planets
Weight is the force exerted on a mass by gravity, calculated as W = m × g. Unlike mass (which stays constant), weight changes depending on the gravitational field. This calculator shows your weight in newtons, pounds, and kilogram-force on any celestial body.
Mass is the amount of matter in an object and remains constant regardless of location. Weight is the gravitational force acting on that mass and varies with gravity. An object with a mass of 70 kg weighs 686 N on Earth but only 113 N on the Moon.
The Moon has only about 1/6 of Earth's gravity because it has much less mass. The Moon's surface gravity is 1.62 m/s² compared to Earth's 9.81 m/s². Your mass stays the same, but your weight on the Moon would be about 16.5% of your Earth weight.