Gravitational Force Calculator

Newton's Law of Gravitation: F = Gm₁m₂/r²

Mass 1 (kg)

Mass 2 (kg)

Distance r (m)

Quick-fill mass (click to set M1):

About

F = Gm₁m₂/r². G = 6.674×10⁻¹¹ N·m²/kg² (gravitational constant). Force decreases with square of distance (inverse square law). Earth-Moon gravitational force ≈ 1.98×10²⁰ N.