Unit ConverterInstant Bidirectional Conversion
Amps to Watts Converter (A to W)
Convert electric current in Amps (A) to power in Watts (W) and Kilowatts (kW).
Convert Amperes to Watts
A
V
0.1 - 1.0
Conversion Result
Power in Watts (W)
1,800 W
1.800 Kilowatts (kW)
Apparent Power (kVA)
1.800 kVA
15 A @ 120 V
Step-by-Step Engineering Calculation
- 1Power:
Conversion Formula & Relationship
P_DC = V × I | P_1φ = V × I × PF | P_3φ = √3 × V × I × PF
Computes total electrical wattage generated or consumed from current flow and supply voltage.
Standard Conversion Example
Input: 20 Amps at 120 Volts AC (PF = 1.0)
Result: 2,400 Watts (2.40 kW)
20 A × 120 V = 2,400 W.
20 Amps at 120 Volts AC (PF = 1.0) = 2,400 Watts (2.40 kW)
Quick Reference Conversion Table
| Amperes (A) | Watts (W) | Common Application / Context |
|---|---|---|
| 1 A (120V) | 120 W | 120 VA |
| 5 A (120V) | 600 W | 600 VA |
| 10 A (120V) | 1,200 W | 1.2 kW |
| 15 A (120V) | 1,800 W | 1.8 kW (15A circuit max) |
| 20 A (120V) | 2,400 W | 2.4 kW (20A circuit max) |
| 30 A (240V) | 7,200 W | 7.2 kW |
| 50 A (240V) | 12,000 W | 12.0 kW (Range / EV) |
| 100 A (240V) | 24,000 W | 24.0 kW (Subpanel) |
Frequently Asked Questions
How many Watts is a 15 Amp circuit?
A 120V 15A circuit can support up to 1,800 Watts peak, or 1,440 Watts continuous (under the 80% rule).