Watts to Amps Formula Conversion Calculator is an online conversion tool to convert power in watts to current in amps from the known values of watts and power factor (in case of AC). Enter power in watts and enter PF (In case of AC), choose power factor and press calculate to find current.
List of Contents
DC watts to amps Conversion Formula
Amps = Watts/Volts
In case of DC, the current I in amps equals the power P in watts (W) divided by the voltage V in volts (V). The aforementioned formula can also be written as:
I(A) = P(W) /V(V)
AC single phase watts to amps Conversion Formula
Amps = Watts/(PF * Volts)
In the case of single-phase AC circuits the phase current, I in amps (A) equals the power P in watts (W), divided by the power factor PF times the RMS voltage V in volts (V). The aforementioned formula can be also expressed as:
I(A) = P(W)PF × V(V)
AC three phase watts to amps Conversion Formula
In case of given line to line voltage
Amps = Watts * PF * V(L-L) * √3
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). The previously mentioned equation can also be written as: I(A) = P(W)√3 × PF × VL-L(V)
In case of given line to neutral voltage
Amps = Watts * PF * V(L-L) * 3
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). Previously mentioned formula can also be expressed as: I(A) = P(W)3 × PF × VL-N(V)