Effortless Conversion: Watts to Amps Calculator for Quick Electrical Current Estimations.
The current I in amps (A) is equal to the power P in watts (W), divided by the voltage V in volts (V):
P = 200W, V = 40V
The phase current I in amps (A) is equal to the power P in watts (W), divided by the power factor PF times the RMS voltage V in volts (V):
The power factor of resistive impedance load is equal to 1.
P = 2000W, V = 110V, PF = 0.8
The phase current I in amps (A) is equal to the power P in watts (W), divided by square root of 3 times the power factor PF times the line to line RMS voltage VL-L in volts (V):
The power factor of resistive impedance load is equal to 1.
The phase current I in amps (A) is equal to the power P in watts (W), divided by 3 times the power factor PF times the line to neutral RMS voltage VL-N in volts (V):
The power factor of resistive impedance load is equal to 1.
Do not use typical power factor values for accurate calculations.
| Device | Typical power factor |
|---|---|
| Resistive load | 1 |
| Fluorescent lamp | 0.95 |
| Incandescent lamp | 1 |
| Induction motor full load | 0.85 |
| Induction motor no load | 0.35 |
| Resistive oven | 1 |
| Synchronous motor | 0.9 |
| Power (W) | Voltage (V) | Current (A) |
|---|---|---|
| 10 watts | 120 volts | 0.0833 amps |
| 20 watts | 120 volts | 0.167 amps |
| 30 watts | 120 volts | 0.250 amps |
| 40 watts | 120 volts | 0.333 amps |
| 50 watts | 120 volts | 0.417 amps |
| 60 watts | 120 volts | 0.500 amps |
| 70 watts | 120 volts | 0.583 amps |
| 80 watts | 120 volts | 0.667 amps |
| 90 watts | 120 volts | 0.750 amps |
| 100 watts | 120 volts | 0.833 amps |
| 200 watts | 120 volts | 1.667 amps |
| 300 watts | 120 volts | 2.500 amps |
| 400 watts | 120 volts | 3.333 amps |
| 500 watts | 120 volts | 4.167 amps |
| 600 watts | 120 volts | 5.000 amps |
| 700 watts | 120 volts | 5.833 amps |
| 800 watts | 120 volts | 6.666 amps |
| 900 watts | 120 volts | 7.500 amps |
| 1000 watts | 120 volts | 8.333 amps |
Using the Watts to Amps Calculator is simple. Input the power value in Watts (W) into the provided field, and then press the "Calculate" or "Convert" button. The calculator will instantly give you the corresponding current value in Amperes (A). This tool is useful for determining the electrical current required for various devices and appliances.