Watts to Amps Calculator

Amps are watts divided by volts. A 1,200-watt microwave on a 120-volt circuit draws 10 amps.

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Your answer

1,200 W at 120 V =10 A

Kilowatts
1.2 kW

The math behind it: Watts to Amps

DC: A = W / V AC single phase: A = W / (V x PF) AC three phase: A = W / (√3 x V x PF)

Use this to check whether an appliance will overload a circuit or to size a fuse. In countries with 230-volt mains the same appliance draws roughly half the current.

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