Watts to Amps Calculator
Convert power to current and calculate electrical current from watts and voltage. Perfect for electrical engineering, circuit design, and power calculations.
Electrical Calculator
Electrical Results
Enter electrical values to calculate current
Electrical Engineering Information
Common Electrical Values
- • Household Voltage: 120V (US), 230V (EU)
- • Light Bulb: 60W, 100W, 150W
- • Microwave: 1000W, 1200W, 1500W
- • Air Conditioner: 3500W, 5000W
- • Electric Heater: 1500W, 2000W
Power Factor Examples
- • Resistive Loads: 1.0 (heaters, lights)
- • Inductive Loads: 0.8-0.9 (motors, transformers)
- • Capacitive Loads: 0.9-1.0 (capacitors)
- • Mixed Loads: 0.7-0.9 (appliances)
- • Power Factor Correction: Improves efficiency
About the Watts to Amps Calculator
Our free watts to amps calculator converts power (watts) to current (amps) for DC and AC single-phase. Enter watts and voltage (and power factor for AC) to get amps. Useful for circuit sizing and inverters. For kVA to amps use our kVA to amps calculator.
You may also find our kVA to amps calculator useful.
Frequently Asked Questions
How do I convert watts to amps?
Amps = Watts ÷ Voltage. For DC or AC resistive load, that’s enough. For AC with power factor, Amps = Watts ÷ (Voltage × Power Factor).
What is power factor?
Power factor (0–1) is the ratio of real power to apparent power in AC. Motors and some loads have PF < 1; the calculator lets you enter it for AC.
DC vs AC?
DC: Amps = Watts ÷ Volts. AC single-phase: Amps = Watts ÷ (Volts × PF). This calculator supports both.