The Electric Field Calculator computes the electric field magnitude produced by a single point charge using Coulomb’s law E=kqr2E = k\frac{q}{r^2}E=kr2q​, where qqq is the charge in coulombs, rrr is the distance from the charge in meters, and kkk (Coulomb’s constant) is approximately 8.9875×1098.9875\times 10^98.9875×109 N·m²/C²; after entering the charge and distance, the calculator shows the electric field in newtons per coulomb (N/C) and indicates whether the field points away from the charge (for positive q) or toward it (for negative q), making it a quick tool for students and anyone studying electrostatics.