Ohm's Law Calculator

Ohm's Law Calculator

Enter two known values and press Solve to calculate unknowns.


Volts
(Volts)

Resistance
(Ohms)

Current
(Amps)

Power
(Watts)

There are 1000 milliAmps in an Amp. So in .5 amps there are (.5 x 1000) 500 milliAmps

Or 500 milliAmps = .5 amps (500 / 1000 = .5 amps)