Gravitational force calculator
Newton’s law of universal gravitation states that two masses attract each other
with a force F = G × m₁ × m₂ / r², measured in newtons (N). Here G is the
gravitational constant, 6.674×10⁻¹¹ N·m²/kg².
The default values — Earth’s mass, a 70 kg person, and Earth’s radius — return that person’s weight, around 686 N. Enter your own masses and separation (in metres) to compute the attraction between any two bodies.
Everything runs in your browser; nothing is uploaded.