20 Amps to Watts
20 Amps equals 2,400W at 120V or 4,800W at 240V. Common loads: Kitchen circuit, bathroom circuit, power tools.
20 Amps to Watts
4,800 W @240V
120V
2,400W
208V
4,160W
240V
4,800W
277V
5,540W
480V
9,600W
The Formula
Watts = Amps × Volts. For 20 Amps at 240V: 20 × 240 = 4,800W.
Amps to Watts at Every Voltage
| Voltage | Watts | kW |
|---|---|---|
| 120V | 2,400W | 2.4 kW |
| 208V | 4,160W | 4.2 kW |
| 240V | 4,800W | 4.8 kW |
| 277V | 5,540W | 5.5 kW |
| 480V | 9,600W | 9.6 kW |
Common 20A Loads
Kitchen circuit, bathroom circuit, power tools. Always check nameplate ratings.
Disclaimer: For reference only. Consult a licensed electrician.