Ohm's Law Calculator
Solve V, I, R, P from any two known values.
About this tool
Pick any two of voltage, current, resistance and power — the tool computes the other two using V = IR and P = VI.
Solve V, I, R, P from any two known values.
Pick any two of voltage, current, resistance and power — the tool computes the other two using V = IR and P = VI.