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1 amps to watts
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120 W
1 amps at 120 V · 240 W at 240 V
1 amps to watts by voltage
| Voltage | Watts | kW |
|---|---|---|
| 12 V DC | 12 W | 0.01 kW |
| 24 V DC | 24 W | 0.02 kW |
| 120 V | 120 W | 0.12 kW |
| 208 V | 208 W | 0.21 kW |
| 230 V | 230 W | 0.23 kW |
| 240 V | 240 W | 0.24 kW |
| 208 V three-phase (PF 0.9) | 324 W | 0.32 kW |
| 480 V three-phase (PF 0.9) | 748 W | 0.75 kW |
Single-phase: W = A × V (power factor 1). Three-phase: W = √3 × A × V × PF; motors and electronics have PF below 1.
FAQ
How many watts is 1 amps?
1 A × 120 V = 120 W; at 240 V it is 240 W. Watts = amps × volts for resistive single-phase loads.
What breaker do I need for a 1 amp load?
For a continuous load (3+ hours) the NEC sizes the breaker at 125%: 1.25 A → next standard size 15 A. Check local code.
Wire size for a 15 A circuit · Ohm’s law calculator · All amps to watts
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