About the Gravitational Force Calculator
Newton's law of universal gravitation: the attraction between two masses at a distance.
Also known as: law of gravitation, gravity between two objects, universal gravitation.
How to use this calculator
- Enter mass 1, mass 2, distance between centres.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
F = G·m₁·m₂ / r², G = 6.674 × 10⁻¹¹ N·m²/kg²
Worked example
Using the values pre-filled in the calculator above:
- Mass 1 = 5.972 × 10^24 kg
- Mass 2 = 70 kg
- Distance between centres = 6,371,000 m
the calculator returns:
- Gravitational force: 687.39814 N
- Acceleration of mass 2: 9.81997 m/s²
- Force at double distance: 171.849535 N