Electric Field Calculator

Electric field, force, and potential from charge and distance.

Source Charge (C)

Distance (m)

Test Charge (C)

Tab to move between fields

Electric Field (V/m)

898,755

Force on Test Charge (N)

Electric Potential (V)89,875.5

Potential Energy (J)0

Direction (1=away, -1=toward)1

Field at 2x Distance (V/m)224,689

How to Use This Calculator

Enter the source charge (C) — use scientific notation, e.g., 1e-6 for 1 microcoulomb.
Enter the distance (m) from the source charge to the point of interest.
Enter the test charge (C) to compute force on it.
Read electric field strength (V/m) and force on the test charge (N).
Review electric potential (V) and potential energy (J) at this distance.

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