Core Reference • Amps to Watts
Printable Amps to Watts Conversion Chart
This printable amps to watts cheat sheet gives instant conversions at 12V (DC/solar), 120V (US household), and 240V (high-power appliances and EV charging). Use it alongside our free amps to watts calculator for AC power factor and 3-phase loads.
Amps to Watts Cheat Sheet
Formula: Watts = Amps × Volts (PF = 1.0 for resistive loads)
12V DC (Automotive, Solar, RV)
| Current (Amps) | Power (Watts) |
|---|---|
| 1 A | 12 W |
| 5 A | 60 W |
| 10 A | 120 W |
| 20 A | 240 W |
| 50 A | 600 W |
| 100 A | 1,200 W |
120V AC (Standard US Household)
| Current (Amps) | Power (Watts) |
|---|---|
| 1 A | 120 W |
| 5 A | 600 W |
| 10 A | 1,200 W |
| 15 A (15A breaker max) | 1,800 W |
| 20 A (20A breaker max) | 2,400 W |
| 30 A (RV hookup) | 3,600 W |
240V AC (Dryers, EVs, HVAC)
| Current (Amps) | Power (Watts) |
|---|---|
| 10 A | 2,400 W |
| 20 A | 4,800 W |
| 30 A | 7,200 W |
| 40 A | 9,600 W |
| 50 A | 12,000 W |
| 100 A | 24,000 W |
Interactive charts & AC formulas
For power factor and three-phase values, use our amps to watts conversion charts or the main amps to watts calculator.