Ohm's Law Calculator

There's no need to guess at Ohm's Law calculations with this handy tool. Just plug in two known parameters and let our calculator do the rest.

• Ohm's Law Calculator
• Room Heating Calculator

Enter only two of the following values to calculate the remaining two:

Voltage (V):		Volts
Heat Output (W):		Watts
Resistance (R):		Ohms
Current (I):		Amps

Calculate Now

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• Single Phase
• Three Phase Delta
• Three Phase Wye