Example: Current: 15 A · Voltage: 120 V · Power factor (1 for DC/resistive): 1 → Power: 1,800 W.
Kilowatts: 1.8 kW
Per hour at $0.15/kWh: $0.27
Frequently asked questions
How do I calculate amps to watts? Enter your numbers above and the result updates instantly. For example: Current: 15 A · Voltage: 120 V · Power factor (1 for DC/resistive): 1 → Power: 1,800 W.
Is this Amps to Watts Calculator free? Yes — completely free with no sign-up or paywall. It runs entirely in your browser and keeps working offline; the numbers you enter never leave your device.
How accurate is it? It uses the standard published formula for amps to watts. Results are estimates for planning — not financial, tax, medical, engineering, or legal advice.