Electric Field Calculator (Gauss's Law)
Electric field and potential of a point charge, infinite line, infinite plane or charged conducting sphere.
How to use the Electric Field Calculator
- Enter or select: Charge distribution, Charge Q, λ or σ, Distance r, Sphere radius R.
- The results (Electric field E, Potential V (point/sphere), Force on a 1 µC test charge) are calculated instantly as you type.
- Use “Copy link” to share the calculation with the same input values.
Formula
- ∮ E·dA = Q/ε₀ (Gauss's law)
- Point: E = Q/(4πε₀r²)
- Line: E = λ/(2πε₀r)
- Plane: E = σ/(2ε₀)