Newton's Law of Gravitation Calculator
Fill in the values and the answer updates as you type.
How the Newton's Law of Gravitation Calculator works
F = G × m1 × m2 ÷ r². The defaults show the pull of Earth on a 70 kg person at sea level. Example: with Mass 1 5.972e24 kg, Mass 2 70 kg, and Distance between centers 6,371,000 m, the result is Gravitational force (N) = 687.4; Force in kilogram-force = 70.1.
Inputs and results
The Newton's Law of Gravitation Calculator takes 3 inputs and gives 2 results.
What you enter
- Mass 1 (kg) — starts at 5.972E+24.
- Mass 2 (kg) — starts at 70.
- Distance between centers (m) — starts at 6371000.
What you get
- Gravitational force (N)
- Force in kilogram-force
Example: Newton's Law of Gravitation Calculator with the starting values
With mass 1 5.972E+24 kg, mass 2 70 kg and distance between centers 6371000 m, the calculator returns:
| Gravitational force (N) | 687.4 |
|---|---|
| Force in kilogram-force | 70.1 |
Change any value above and the results update straight away.
Newton's Law of Gravitation Calculator FAQ
How do I use the Newton's Law of Gravitation Calculator?
Enter mass 1, mass 2 and distance between centers in the fields, then read gravitational force (n) and force in kilogram-force in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the Newton's Law of Gravitation Calculator calculate?
Gravitational force between two masses. It returns gravitational force (n) and force in kilogram-force from the 3 values you provide.
What values does the Newton's Law of Gravitation Calculator start with?
It opens with mass 1 5.972E+24 kg, mass 2 70 kg and distance between centers 6371000 m so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the Newton's Law of Gravitation Calculator free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the Newton's Law of Gravitation Calculator for important decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm important decisions with a qualified professional. See the Disclaimer for more.