Joules to Volts Electrical Conversion Calculator

Convert joules to volts by entering the energy in joules and the charge in coulombs below.

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How to Convert Joules to Volts

Joules are a measure of electrical energy and coulombs are a measure of charge. These measurements can be used to derive the voltage using this formula.

Volts = Joules ÷ Coulombs

Thus, the voltage is equal to the energy in joules divided by the charge in coulombs.

For example, let’s convert 20 joules and 5 coulombs to volts.

Volts = 20 J ÷ 5 C
Volts = 4 V

You might also be interested in our joules to watts calculator.