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Watts to Volts

Welcome to watts to volts, our article explaining the relationship between the unit of power P in watts and the voltage V, also known as electric potential difference, in volts.

For this we use the formula V = P / I; I denotes the electric current, or amperage, measured in ampere.

Here, we are going to show you how to convert the units for both, direct as well as alternating current.

If you have been looking for how many volts in a watt, then you are definitively right here, too. 🙂 Keep reading to learn all about watts in volts.



Convert Watts to Volts

The relation between the electrical power consumption and the voltage is indirect; the amperage must also be known.

To convert W to V, choose the formula which reflects your circuit:

  1. Direct Current (DC): V(V) = P(W) / I(A)
  2. Alternating Current (AC), 1 Phase: V(V) = P(W) / (PF × I(A))
  3. Alternating Current (AC), 3 Phase, Line to Line (L-L): V(V) = P(W) / (√3 × PF × I(A))
  4. Alternating Current (AC), 3 Phase, Line to Neutral (L-N): V(V) = P(W) / (3 × PF × I(A))

For example, assumed the power consumption is 60W and the current is 1.5A:

  • In case of direct current, in order to convert watts to volts divide the power in watt by the electric current in ampere. As a result, the voltage in watt is 40V (60W / 1.5A).
  • In case of 1 phase AC, divide the energy transfer rate W by the product of the power factor PF and the current. Assumed a PF of 0.5, the electric potential difference is 80V [60W / (1.5A × 0.5)].
  • For 3 phase AC L-L, divide the power P in watts by the product of √3, the power factor PF and the amperage. For a PF of 0.5, the electric potential difference is 46.18V [60W / (√3 × 1.5A × 0.5)].
  • For 3 phase AC L-N, divide the power in watt by the product of 3, the power factor PF and the current in amperes. With a PF of 0.6, the voltage is 26.66V [60W / (3 × 1.5A × 0.5)].

You can find the explanation of the power factor PF in our article volts to watts, along with the terms real power and apparent power. Below is some info regarding our watt volt converter.

About our Watts to Volts Converter

To use our watt to volt calculator at the beginning of this article insert the value for the power in watts, then, in the next field, enter your value for the current in amps.

Finally, choose your type of current flow and hit enter.

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Our most frequent calculations in this category include, for instance:

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Now, check out our custom search form in the sidebar or at the bottom. Using that search you can locate many watts conversions.

In the next section you can find the summary of watt to volt.


In conclusion, remember that V = I / P, and come back to our whenever you have to conduct a watts into volts conversion.

This image sums all up:

Further information about watts and volts can be found in the referenced sites on our homepage.

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– Article written by Mark