Enter the total charge stored (C) and the total capacitance (F) into the calculator to determine the Capacitor Voltage. 

Capacitor Voltage Formula

The following formula is used to calculate the Capacitor Voltage. 

Vc = Q / C


  • Where Vc is the Capacitor Voltage (volts)
  • Q is the total charge stored (C) 
  • C is the total capacitance (F) 

To calculate capacitor voltage, divide the total charge stored by the total capacitance.

How to Calculate Capacitor Voltage?

The following two example problems outline the steps and information needed in order to calculate the Capacitor Voltage.

Example Problem #1:

  1. First, determine the total charge stored (C). In this example, the total charge stored (C) is measured to be 50.
  2. Next, determine the total capacitance (F). For this problem, the total capacitance (F) is calculated to be 3.
  3. Finally, calculate the Capacitor Voltage using the formula above: 

Vc = Q / C

Inserting the values from above into the equation yields: 

Vc = 50 / 3 = 16.666 (volts)

Example Problem #2: 

Using the same process as the first example, define the variables outlined by the formula. In this case, these values are:

total charge stored (C) = 43

total capacitance (F) = 6

Entering these values into the formula or calculator above gives us:: 

Vc = 43 / 6 = 7.166 (volts)