Weight Calculator
Calculate the weight of any mass under different gravitational conditions. This tool demonstrates how your weight changes throughout the solar system.
What is the difference between mass and weight?
Mass is the amount of matter in an object and remains constant everywhere in the universe. Weight is the force of gravity acting on that mass. An object with a mass of 10 kg will always have 10 kg of mass, but it will weigh less on the Moon than on Earth because the Moon's gravity is weaker.
How do you calculate weight?
Weight is calculated using Newton's second law of motion: Weight = Mass à Gravity (W = m * g). On Earth, the standard gravity is approximately 9.80665 m/s².
How much would I weigh on the Moon?
The Moon's gravity is about 1/6th (16.5%) of Earth's gravity. If you weigh 150 lbs on Earth, you would weigh about 25 lbs on the Moon, although your mass remains identical.
What are common units of weight and mass?
In the metric system, mass is measured in kilograms (kg) and weight (force) in Newtons (N). In the US customary system, "pounds" is commonly used for both, though technically "pound-mass" and "pound-force" are distinct units.