300 Watts to Amps
300 watts is 2.5 amps at 120 volts and 1.25 amps at 240 volts (amps = watts ÷ volts, at unity power factor). Every common voltage below.
300 Watts to Amps conversion table
| Voltage | Amps (PF 1.0) | Amps (PF 0.8) |
|---|---|---|
| 12 V DC | 25 A | — |
| 24 V DC | 12.5 A | — |
| 48 V DC | 6.25 A | — |
| 120 V AC | 2.5 A | 3.13 A |
| 208 V AC | 1.44 A | 1.8 A |
| 240 V AC | 1.25 A | 1.56 A |
| 277 V AC | 1.08 A | 1.35 A |
| 480 V AC | 0.63 A | 0.78 A |
PF = power factor. Resistive loads (heaters, incandescent lights) are PF 1.0; motors and compressors typically run PF 0.8-0.9. For a different value, use the interactive converter.
What draws about 300 watts?
Frequently asked questions
2.5 amps (300 W ÷ 120 V). On a circuit, a 300 W resistive load needs at least a 15 A breaker — and 25% more if it runs 3+ hours continuously.
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