🌍Gravitational Force Calculator
Newton's law of universal gravitation: F = Gm₁m₂/r².
Free Gravitational Force Calculator
Our free gravitational force calculator applies Newton's law of universal gravitation instantly. Enter the two masses and the distance between them, and get the gravitational force immediately — or solve for a mass or distance if that's your unknown.
Preset values for Earth, the Moon, the Sun, and other planets make astronomy problems quick to set up, and the calculator handles the huge and tiny numbers involved in gravity calculations cleanly with scientific notation, so you never lose precision. Every result comes with the formula and substitution shown, including the gravitational constant.
Whether you're studying physics, astronomy, or just curious about the forces holding the solar system together, this tool gives accurate answers with the reasoning shown. No sign-up, no downloads, no limits.