Law of Universal Gravitation
Quickly Compute gravitational force between two masses using Newton’s law.
About Law of Universal Gravitation
GravCalc is an easy-to-use calculator for the Law of Universal Gravitation. Enter two masses and the distance between them and GravCalc computes the gravitational force using Newton’s formula
𝐹
=
𝐺
⋅
𝑚
1
⋅
𝑚
2
𝑟
2
F=G⋅
r
2
m
1
⋅m
2
. The app uses the standard gravitational constant
𝐺
=
6.67430
×
10
−
11
N
⋅
m
2
/
k
g
2
G=6.67430×10
−11
N⋅m
2
/kg
2
by default and shows results in Newtons with scientific formatting. Ideal for students, teachers, and anyone curious about gravity — simple inputs, clear outputs, input validation, and copy/share the result.
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