Coulomb's Law Calculator

Calculate Electrostatic Force

Charge 1 (C)

Charge 2 (C)

Distance (m)

Formula

F = k|q₁q₂|/r² | k = 8.988×10⁹ N·m²/C²

Frequently Asked Questions

What is Coulomb's Law?

F = k × |q₁q₂| / r², where k = 8.9875 × 10⁹ N·m²/C². Like charges repel, unlike charges attract. The force is proportional to the product of charges and inversely proportional to the square of the distance.

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