Amps to Watts Calculator | PES Supply
Amps to Watts Calculator
Convert amperage to wattage instantly. Enter amps and volts to calculate watts for solar panels, generators, and electrical systems.
Formula
Amps to Watts Conversion Table
| Amps (A) | 120V | 240V |
|---|---|---|
| 5A | 600W | 1,200W |
| 10A | 1,200W | 2,400W |
| 15A | 1,800W | 3,600W |
| 20A | 2,400W | 4,800W |
| 30A | 3,600W | 7,200W |
| 50A | 6,000W | 12,000W |
| 100A | 12,000W | 24,000W |
Common Solar & Generator Applications
- Calculate total wattage for solar panel arrays
- Size generators for specific appliance loads
- Determine inverter capacity requirements
- Plan battery bank discharge rates
- Size charge controllers for solar systems
How do I convert amps to watts?
Multiply amps by volts: Watts = Amps x Volts. For example, 20A at 120V = 2,400W.
How many watts is 30 amps at 240V?
30 amps x 240 volts = 7,200 watts. This is common for RV shore power and generator transfer switches.
How many amps is a 7,200W generator at 240V?
7,200W / 240V = 30A. This is standard for a 30A generator inlet box.