These calculators can be used to generate data using charge, radius and force.
The calculators on this page rovolve around a single equation. That equation is rearranged in terms of the variables in it and there is a section per version of the equation. Each section contains a series of graphs that each vary one of the other variables in the equation.

Calculate the force given two chargees and a radius.

F = kQq/r2

Graph of force vs charge1
F = kQq/r2
Force with changing charge1
Graph of force vs charge2
F = kQq/r2
Force with changing charge2
F = kQq/r2

Calculate the first charge given the second charge, force and radius.

M = Fr2/Gm

Graph of charge1 vs force
M = Fr2/Gm
charge 1 with changing force
Graph of charge1 vs charge2
M = Fr2/Gm
charge 1 with changing charge2
M = Fr2/Gm

Calculate the second charge given the first charge, force and radius.

q = Fr2/kQ

Graph of charge2 vs force
q = Fr2/kQ
charge 2 with changing force
Graph of charge2 vs charge1
q = Fr2/kQ
charge 2 with changing charge1
q = Fr2/kQ

Calculate the radius given the chargees and force.

r = √[kQq/F]