Gravitational Force Calculator
Newton's law of universal gravitation.
Enter your values
ⓘ Live results
Results
- Gravitational force
- 1.9821e+20 N
- Acceleration of mass 2
- 2.6975e-3 m/s²
- Distance
- 384400 km
- Force in tonnes-force
- 2.021e+16
Quick answer
Gravitational force falls with the square of the distance between two masses.
F = G m1 m2 ÷ r²
How to use the Gravitational Force Calculator
- 1Enter both masses in kilograms.
- 2Enter the separation between their centres.
- 3Read the resulting force.
Worked example
Using the values the calculator loads with:
Inputs
- Mass 15.972e24 kg
- Mass 27.348e22 kg
- Distance384400 km
Results
- Gravitational force1.9821e+20 N
- Acceleration of mass 22.6975e-3 m/s²
- Distance384400 km
- Force in tonnes-force2.021e+16
Frequently asked questions
Why is gravity so weak?
G is tiny, so noticeable gravity needs planetary-scale mass.
Does distance or mass matter more?
Distance — the inverse square makes separation dominate.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.