Coulomb's Law Calculator
Calculate the electrostatic force between two point charges
k = 8.99e9 N·m²/C² (Coulomb's constant)
Use scientific notation for very small charges (e.g., 1.6e-19)
Formula Used
F = k|q₁q₂|/r²
k = 8.99 × 10⁹ N·m²/C² (Coulomb's constant)
Like charges repel, opposite charges attract
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: University Physics
by Young & Freedman
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.