Watt Calculator
Multiplies Voltage and Current (P=V*I).
Fill in the fields to calculate
How to find out the Watts?
In any electrical project, knowing the Power (measured in Watts) of a device is essential to avoid causing fires or overloads. The universal electrical formula states that you just need to multiply the Voltage (110V or 220V) by the Amperage that the device draws to find the total Watts.