This Coulomb’s Law Calculator tool helps you calculate the electrostatic force between two charged objects.

## Coulomb’s Law Calculator

### How to Use

Enter the values for both charges in Coulombs and the distance between the charges in meters, then press the “Calculate” button. The result will be displayed in Newtons (N), showing the magnitude of the electrostatic force between the two charges.

### How it Calculates

The calculator uses Coulomb’s law, represented by the formula F = k * |q1 * q2| / d^{2}, where F is the magnitude of the electrostatic force, k is the Coulomb’s constant (approx. 8.99 x 10^{9} N m^{2}/C^{2}), |q1| and |q2| are the absolute values of the charges, and d is the distance between the charges. The formula calculates the force exerted by one charge onto another.

### Limitations

This calculator assumes that the charges are static and point-like, and that they are in a vacuum. It does not account for other forces acting on the charges or for finite size effects of the charges. It may also not be accurate for very large distances, as it assumes an inverse-square law that has not been tested at all scales.