🌍 Gravitational Force Calculator
Calculate the gravitational attraction between two masses using Newton’s law of universal gravitation.
Newton’s law of universal gravitation
Every pair of masses in the universe attracts each other with a force proportional to the product of their masses and inversely proportional to the square of the distance between their centers: F = G·m1·m2 / r², where G is the gravitational constant (6.674×10-11 N·m²/kg²).
How this calculator works
Enter the two masses in kilograms and the distance between their centers in meters. The calculator applies Newton’s formula directly to compute the attractive gravitational force between them in newtons.
This formula treats both masses as point masses (or uniform spheres) and gives the force at a single instant; it does not account for relativistic effects, which only matter for extremely massive or fast-moving objects. For general physics education purposes.