100 Watts to Amps
100 watts is 0.83 amps at 120 volts and 0.42 amps at 240 volts (amps = watts ÷ volts, at unity power factor). Every common voltage below.
100 Watts to Amps conversion table
| Voltage | Amps (PF 1.0) | Amps (PF 0.8) |
|---|---|---|
| 12 V DC | 8.33 A | — |
| 24 V DC | 4.17 A | — |
| 48 V DC | 2.08 A | — |
| 120 V AC | 0.83 A | 1.04 A |
| 208 V AC | 0.48 A | 0.6 A |
| 240 V AC | 0.42 A | 0.52 A |
| 277 V AC | 0.36 A | 0.45 A |
| 480 V AC | 0.21 A | 0.26 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 100 watts?
Frequently asked questions
0.83 amps (100 W ÷ 120 V). On a circuit, a 100 W resistive load needs at least a 15 A breaker — and 25% more if it runs 3+ hours continuously.
Ask AI about this
Open an AI assistant with a question grounded in this page.