Enter the power in watts, along with the voltage of the system, and whether the current is in DC or AC to convert the watts to amps. This calculator can also convert amps to watts.
| 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. | |
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| 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.
