# Watts to Amps conversion

## Select current type, enter the power in watts, the voltage in volts, the power factor for the AC circuit and press the Calculate button:

 Direct Current (DC) Single Phase Alternating Current (AC) Three Phase Alternating Current (AC) Watts: W Voltage type: Line to line voltage Line to neutral voltage Volts: V Power factor: Power factor: V Results (amps): W
 DC Watts to Amps calculation The current I in amps (A) is equal to the power P in watts (W) divided by the voltage V in volts (V): I(A) = P(W) / V(V)

 AC Single Phase Watts to Amps calculation The phase current I in amps (A) is equal to the power P in watts (W) divided by PF times the RMS voltage V in volts (V): I(A) = P(W) / (PF * V(V)) The power factor of resistive impededance load is equal to 1.

 AC Three Phase Watts to Amps calculation Calculation with line to line voltage The phase current I in amps (A) is equal to the power P in watts (W) divided by the square root of 3 times the power factor PF times the line to line RMS voltage VL-L in volts (V): I(A) = P(W) / (√3 * PF * VL-L(V)) The power factor of resistive impedance load is equal to 1. Calculation with line to neutral voltage 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 th line to neutral RMS voltage VL-N in volts (V): I(A) = P(W) / (3 * PF * VL-N(V)) The power factor of resistive impedance load is equal to 1.

Common power factor values

NOTE: It is NOT recommended to use common power factor values for accurate results.

Device Common power factor
Fluorescent lamp 0.95
Incandescent lamp 1