# Amps to Watts conversion

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

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

 AC Single Phase Amps to Watts calculation The power P in watts (W) is equal to the power factor PF times the phase current I in amps (A) times the RMS voltage V in volts (V): P(W) = PF * I(A) * V(V)

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

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  