Watts to Amps
Convert power in watts to current in amps for DC and AC circuits. Free, fast and easy to use.
How it works
Current depends on power, voltage and the type of circuit. For DC, divide watts by volts. For AC, also divide by the power factor, and for three-phase systems additionally by √3. Use a power factor of 1 for purely resistive loads such as heaters and kettles.
Formula
DC: I = P / V AC 1~: I = P / (V × PF) AC 3~: I = P / (√3 × V × PF)
Worked examples
- Power (W): 2000 · Voltage (V): 230 · Circuit type: AC single-phase · Power factor (cos φ): 1 → Current: 8.6957 A
- Power (W): 11000 · Voltage (V): 400 · Circuit type: AC three-phase · Power factor (cos φ): 0.9 → Current: 17.6413 A
- Power (W): 60 · Voltage (V): 12 · Circuit type: DC → Current: 5 A
Calculations run locally in your browser. Results are for information only — for engineering, electrical or financial decisions, verify the assumptions and applicable standards.
Frequently asked questions
How many amps is 2000 watts at 230 V?
For a resistive load, 2000 W ÷ 230 V = 8.7 A, which a standard 10 A or 16 A circuit can handle.
Why do I need the power factor?
In AC circuits with motors, transformers or electronics, current and voltage are out of phase, so more current flows than P ÷ V suggests. Divide additionally by the power factor (often 0.8–0.95).
Related calculators
Conversion table
Voltage (V): 230 · Circuit type: AC single-phase · Power factor (cos φ): 1
| Power (W) | Current |
|---|---|
| 100 | 0.4348 A |
| 500 | 2.1739 A |
| 1000 | 4.3478 A |
| 1500 | 6.5217 A |
| 2000 | 8.6957 A |
| 2300 | 10 A |
| 2500 | 10.8696 A |
| 3000 | 13.0435 A |
| 3500 | 15.2174 A |
| 3680 | 16 A |
| 5000 | 21.7391 A |