Amps drawn by a 1,500 W heater at 120 V

Answer: current = 12.5 A (equivalent resistance 9.6 Ω).

What we know

Power: 1500 W
Voltage: 120 V

Step by step

Given: P = 1500 W, V = 120 V
Formula: I = P / V
Substitute: I = 1500 / 120
Result: I = 12.5 A

All results

Current	12.5 A
Equivalent resistance	9.6 Ω

Open the watts to amps calculator with these numbers → and change any of them.

The physics

Electrical power is voltage times current, P = V·I. Rearranged, the current a device draws is its power divided by the supply voltage: I = P / V. That single step turns any appliance's wattage into the amps flowing through its cord and the circuit behind it.