Watts to Volts Formula Conversion Calculator is an online conversion tool for calculating voltage in volts from the known value of power in watts. Enter power in watts, and current in amps, then choose type of current and press calculate button to find voltage in volts.
List of Contents
DC Watts to Volts Formula
DC Volts = Watts/Amps
In case of DC, the voltage V in volts (V) equals the power P in watts (W), divided by the current I in amps (A). The aforementioned formula can also be expressed as:
V(V) = P(W)/ I(A)
AC single phase watts to volts Conversion Formula
Volts = Watts / (Amps * Power Factor)
The RMS voltage V in volts (V) equals the power P in watts (W), divided by the power factor PF times the phase current I in amps (A). The aforementioned formula can also be expressed as:
V(V) = P(W) / (PF × I(A))
AC three phase watts to volts Conversion Formula
In case of line to line voltage
Volts (L-L) = Watts / ( √3 * Amps * Power Factor)
The line-to-line RMS voltage VL-L in volts (V) is equal to the power P in watts (W), divided by the square root of 3 times the power factor PF times the phase current I in amps (A). The aforementioned formula can also be expressed as:
VL-L(V) = P(W) / (√3 × PF × I(A)) ≈ P(W) / (1.732 × PF × I(A))
In case of line to neutral voltage
Volts (L-N) = Watts / ( 3 * Amps * Power Factor)
The line to neutral RMS voltage VL-N in volts (V) is equal to the power P in watts (W), divided by 3 times the power factor PF times the phase current I in amps (A). The aforementioned formula can also be expressed as:
VL-N(V) = P(W) / (3 × PF × I(A))