Physics

Watts to Amps Calculator

Find the current draw from power and voltage.

Calculated Output

Current (A) 10

Formula: I = P ÷ V

Step-by-Step Breakdown

1. Values used:

2. Power = 1,200 W

3. Voltage = 120 V

5. Current = Power / Voltage = 1,200 / 120 = 10A

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The math behind it

I = P ÷ V. For AC with a power factor, divide further by the power factor.

1200 W at 120 V → 10 A.

Why does voltage matter?

Higher voltage delivers the same power at lower current, allowing thinner wires.