Gravitational Force

Calculate gravitational force between two masses using Newton's law of gravitation. Includes step-by-step substitution with G, mass, and distance.

Key formula

F = G m1 m2 / r^2

About this tool

Newton's law of gravitation links two masses and their separation to an attractive force. This page helps users see why distance has an especially strong effect because it appears squared in the denominator.

How to use this calculator

1. Choose the variable you want to solve for and confirm which values are already known.
2. Enter inputs in consistent units before calculating so the formula is applied correctly.
3. Check whether the result is physically reasonable by comparing it with the size of the inputs.
4. Use the step-by-step breakdown to see how the equation was rearranged and evaluated.