Coulomb's Law Calculator
Free online Coulomb's Law calculator. Find the electrostatic force of attraction or repulsion between two point charges.
Coulomb's Law Calculator
C
Coulombs
C
m
Electrostatic Force (F)
0.8988NewtonsForce Direction
RepulsiveWhat is Coulomb's Law?
Coulomb's inverse-square law, or simply Coulomb's law, is an experimental law of physics that quantifies the amount of force between two stationary, electrically charged particles.
F = k × |q₁ × q₂| / r²
- F (Force): The electrostatic force in Newtons (N).
- k (Coulomb's Constant): Approximately 8.987 × 10⁹ N⋅m²/C².
- q₁ & q₂: The magnitudes of the charges (Coulombs, C).
- r: The distance between the charges (meters, m).