Newtonian constant of gravitation
Try it yourself:
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gravitationConstant
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gravitationConstant is Newton’s G, the proportionality constant in universal gravitation. It relates two masses and their separation to gravitational force.
Use G in F = Gm₁m₂/r² with SI masses and metres. Do not confuse it with gravity, the local acceleration near Earth’s surface. For orbital energy, combine it with speedOfLight only in the correct relativistic context.
Enter gravitationConstant on a calculator line to see its built-in value, or place the name inside a longer expression. Keep any displayed unit attached when converting or combining physical quantities, and check that every other value uses a compatible dimension.
The example above is editable, so you can replace surrounding values and test the constant in your own formula. Browse all constants to compare related values and notation.