How Many Amps Is 750 Watts?
At 120 V DC, 750 watts = 6.2500 A. At 240 V DC, 750 watts = 3.1250 A. For AC circuits, divide by voltage × power factor (e.g. at 120V AC, PF 0.8: 7.8125 A). Use the calculator below for any voltage or circuit type.
Real example: a ¾–1 HP motor or bench grinder
750 watts is almost exactly one mechanical horsepower (1 HP ≈ 746 W), so it covers a compact microwave, a garbage disposal, a bench grinder, or a ¾–1 HP motor. At 120 V it draws 6.25 A; at 240 V, 3.13 A.
750 Watts to Amps — DC Reference Chart
| Voltage | Current (DC) | Application |
|---|---|---|
| 12 V | 62.5000 A | 12V automotive / RV / solar |
| 24 V | 31.2500 A | 24V solar / industrial DC |
| 48 V | 15.6250 A | 48V telecom / e-bike |
| 120 V | 6.2500 A | US household standard |
| 240 V | 3.1250 A | US/EU 240V circuit |
| 480 V | 1.5625 A | Industrial 3-phase (per phase) |
Wire & breaker: At 120 V, 750 W draws 6.25 A; sized at NEC 125% for a continuous load that is 7.81 A, so a 15 A breaker on 14 AWG copper is correct. Motors, however, have a starting surge — size motor circuits per NEC Article 430, not the 125% rule. Confirm with an electrician. For the full method see watts vs amps.
Frequently Asked Questions
How many amps is 750 watts at 120V?
750 watts at 120V DC = 750 ÷ 120 = 6.2500 amps. For AC single-phase with PF 0.8: 750 ÷ (120 × 0.8) = 7.8125 amps.
How many amps is 750 watts at 240V?
750 watts at 240V DC = 750 ÷ 240 = 3.1250 amps. For AC single-phase with PF 0.8: 750 ÷ (240 × 0.8) = 3.9063 amps.
Is 750 W the same as 1 horsepower?
Almost. One mechanical horsepower is 746 W of output, so a "750 W" motor is roughly 1 HP. But a motor also draws extra for its own losses and a large starting surge, so its running input current is higher than 750 W ÷ V suggests. For motor sizing use kW to amps and the NEC full-load tables.