## DC Watts to volts calculation formula

V_{(V)} = P_{(W)} / I_{(A)}

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

So,

*V = W / A*

*volt = watt / amp*

**For example:**

*Power (P) = 60W*

*Current (I) = 2,5A*

*Voltage (V) = 60W / 2,5A = 24V*

## AC single phase watts to volts calculation formula

V_{(V)} = P_{(W)} / (PF × I_{(A)})

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

So,

*V = W / (PF x A)*

*volt = watt / (PF x amp)*

**For example:**

*Power (P) = 60W*

*Current (I) = 2,5A*

*PF = 0,7*

*Voltage (V) = 60W / (0,7 x 2,5A) = 34,29V*

## AC three phase watts to volts calculation formula

V_{L-L(V)} = P_{(W)} / (√3 × PF × I_{(A)})

The line to line RMS voltage **V**_{VL-L} in volts (V) is equal to the power **P** in watts (W), divided by square root of 3, multiplied by the power factor **PF**, multiplied by the phase current **I** in amps (A).

So,

*V = W / (√3 × PF x A)*

*volt = watt / (√3 × PF x amp)*

**For example:**

*Power (P) = 60W*

*Current (I) = 2,5A*

*PF = 0,7*

*Voltage (V) = 60W / (√3 × 0,7 x 2,5A) = 19,79V*