A fast and easy Ohms Law Calculator. Applies to electric and electronic circuits, and allows you to calculate values for Ohms, Amps, Watts and Volts (Current, Power, Resistance, Voltage). By entering any two known values, Ohm's Law Calculator will find the other two values for you in an instant. Ohm's Law Calculator is extremely useful in the field of electrical / electronic engineering and is ideal for students or professionals. Enter any two values to see all four values.