Ohm's Law Calculator

Enter the two known values into the corresponding fields and click "calculate" to determine the unknown value.

Result:
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Explanation

Circuit diagram illustrating Ohm's Law
Fig.: Circuit diagram illustrating Ohm's Law

Ohm's law states that the electric current through a conductor between two points is directly proportional to the voltage across the two points.

R = V/I = const.

By using equivalent transformations, the three values can be calculated:

R = V/I
U = R × I
I = V/R

Last edited by Christian Grieger on 2025-05-01
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