Calculate watts or amps from voltage and power factor for AC or DC circuits, with W/kW/MW and A/mA/kA unit conversion and calculation steps.
| Watts to Amps | Amps to Watts |
|---|---|
| 5 watts = 0.023 amps | 0.1 amps = 22 watts |
| 10 watts = 0.045 amps | 0.2 amps = 44 watts |
| 20 watts = 0.091 amps | 0.25 amps = 55 watts |
| 25 watts = 0.114 amps | 0.5 amps = 110 watts |
| 30 watts = 0.136 amps | 0.75 amps = 165 watts |
| 40 watts = 0.182 amps | 1 amp = 220 watts |
| 50 watts = 0.227 amps | 1.5 amps = 330 watts |
| 60 watts = 0.273 amps | 2 amps = 440 watts |
| 75 watts = 0.341 amps | 3 amps = 660 watts |
| 100 watts = 0.455 amps | 4 amps = 880 watts |
| 150 watts = 0.682 amps | 5 amps = 1100 watts |
| 200 watts = 0.909 amps | 6 amps = 1320 watts |
| 250 watts = 1.136 amps | 7.5 amps = 1650 watts |
| 300 watts = 1.364 amps | 10 amps = 2200 watts |
| 400 watts = 1.818 amps | 12 amps = 2640 watts |
| 500 watts = 2.273 amps | 15 amps = 3300 watts |
| 750 watts = 3.409 amps | 16 amps = 3520 watts |
| 1000 watts = 4.545 amps | 20 amps = 4400 watts |
| 1500 watts = 6.818 amps | 30 amps = 6600 watts |
| 2000 watts = 9.091 amps | 50 amps = 11000 watts |
| Formulas: I = P ÷ V and P = I × V. Table assumes DC (or AC with PF = 1) and V = 220 V. | |
- All Unit Converters
- Electricity, Magnetism, & Electronics Unit Converters
- All Electrical Calculators
- Voltage Calculator
- KWH Calculator
- Battery Capacity Calculator
- Amps to Watts Calculator
- Watts to Voltage Calculator
- Power to Current Calculator
- KW to Current Calculator
- Watts to Voltage Calculator
| Calculator Operations | Required Inputs |
|---|---|
| Convert Watts to Amps | Watts, Voltage, Power Factor |
| Convert Amps to Watts | Amps, Voltage, Power Factor |
Watts to Amps Formula
The following equation can be used to convert watts to amps.
For DC Currents: I = P / V
- Where I is the current (amps)
- P is the power in Watts
- V is the voltage in volts
For AC Currents: I = P/ (V*PF)
- Where I is the current (amps)
- P is the power in watts
- V is the voltage in volts
- PF is the power factor.
When solving for DC currents, leave the power factor section blank. The power factor is a measure of the efficiency of AC currents since they are represented by a single-phase sine wave. As can be seen, by the equations above, converting watts to amps is not a direct conversion. This is because watts are a measure of energy per unit time and amps are a measure of current. These are different values and as a result, you need additional information, in this case, the voltage, to convert one value to the other.
