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Newton's Gravitational Force Calculator

F = G · m₁ · m₂ / r².

Compute the gravitational attraction between two point masses (or spherical bodies) at a centre-to-centre distance r, using Newton's law of universal gravitation, with G = 6.674·10⁻¹¹ N·m²/kg².

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

× 10²⁴ kg
× 10²² kg
km

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

F = G · m₁ · m₂ / r²

In depth

Compute the gravitational attraction between two point masses (or spherical bodies) at a centre-to-centre distance r, using Newton's law of universal gravitation, with G = 6.674·10⁻¹¹ N·m²/kg².