Gravitational Force Calculator
Find the gravitational force between two masses.
The force that shapes the cosmos
Newton’s law of gravitation gives the attractive force between any two masses, falling off with the square of their separation. It is what holds planets in orbit and objects on the ground.
Two 1000 kg masses one metre apart attract with a force of only about 6.67 hundred-thousandths of a newton — gravity is astonishingly weak until masses become planetary.
Precise and private
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Frequently Asked Questions
What is the formula?
Newton’s law: force equals the gravitational constant times the two masses, divided by the square of the distance between them.
What is G?
The gravitational constant, about 6.674 times ten to the minus eleven, in SI units.
Why is gravity so weak?
Because G is tiny, gravitational force is negligible for everyday masses and only dominates at astronomical scales.
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