Home > How to calculate the Wattage of an appliance?

If the label does not specify the wattage, but you know the Amperage (A), you can calculate it using the following formula:Amps (A) * voltage (V) = Watts
Example:
10 Amps * 220 volt = 2200 watts
10 Amps * 110 volt = 1100 watts

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