Watts To Amps Calculator

Select current type:
Enter power in watts:
Select voltage type:
Enter voltage in volts:
Enter power factor:
Current result in amps:

DC Watts to Amps Calculation

I(A) = P(W) / V(V)
The I (current) in A (amps) is equal to the P (power) in W (watts), divided by the V (voltage) in V (volts).

AC single phase watts to amps calculation

I(A) = P(W) / (PF × V(V))
The phase I (current) in A (amps) is equal to the P (power) in W (watts), divided by the power factor PF times the RMS V (voltage) in V (volts).

AC three phase watts to amps calculation

I(A) = P(W) / (√3 × PF × VL-L(V) )
The phase I (current) in A (amps) is equal to the P (power) in W (watts), divided by square root of 3 times the power factor PF times the line to line RMS voltage VL-L in V (volts).

Amps

Amps measure the flow of electricity as an electric current. Specifically, it measures the amount of electrons that flow past a certain point per second.

Volts

Volts are the measurement used to determine how much force is needed to cause the electric current to flow.

Watts

Amps and volts combine to create watts, a measurement of the amount of energy being released. The higher the wattage is, the more power and output from the appliance.

AC and DC power systems

The labels ‘AC’ and ‘DC’ are used to illustrate the types of current flow in a circuit. For direct current (DC) the electric current flows only in one direction. Alternating current describes the flow of charge that changes direction periodically. As a result, the voltage level also reverses along with the current.

Watts To Amps Calculator

Select Current Type Power in Watts (W) Voltage in Volts (V) Current (A)
DC 40 200 0.2
DC 50 220 0.227
DC 60 240 0.25
DC 70 260 0.269
DC 80 280 0.285
DC 90 300 0.3
DC 100 320 0.3125

Watts To Amps Conversion

Select Current Type AC Power in Watts (W) Voltage in Volts (V) Power Factor (Cosθ) Current (A)
Single phase 40 220 0.11 1.652
Single phase 55 230 0.12 1.992
Single phase 70 240 0.13 2.243
Single phase 79 245 0.14 2.303
Single phase 85 215 0.09 4.392

Convert Watts To Amps

Select Current Type AC Power in Watts (W) Voltage type Voltage in Volts (V) Power Factor (Cosθ) Current (A)
Three phase 40 Line to line 220 0.11 0.954
Three phase 40 Line to neutral 220 0.11 0.55
Three phase 75 Line to line 245 0.13 1.359
Three phase 75 Line to neutral 245 0.13 0.784
Three phase 90 Line to line 277 0.09 2.084
Three phase 90 Line to neutral 277 0.09 1.203