Ohm's Law Calculator
Enter any 2 values then click "Calculate". The unknown values will be calculated.
Voltage
millivolts
volts
kilovolts
megavolts
Current
milliamps
amps
kiloamps
megaamps
Resistance
milliohms
ohms
kilohms
megaohms
Power
milliwatts
watts
kilowatts
megawatts
Ohm's Law defines the relationship between power, voltage, current, and resistance.
