Enter the total number of electrons and the electron charge (C) into the calculator to determine the Total Charge. 

Total Charge Calculator

Choose your inputs — we’ll compute total charge Q.

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Total Charge Formula

The following formula is used to calculate the Total Charge. 

Qtotal = N * e
  • Where Qtotal is the Total Charge (Coulombs)
  • N is the total number of electrons 
  • e is the electron charge (C) (1.6 * 10 ^-19)

To calculate a total charge, multiply the number of electrons by the electron charge.

How to Calculate Total Charge?

The following two example problems outline how to calculate the Total Charge.

Example Problem #1:

  1. First, determine the total number of electrons. In this example, the total number of electrons is given as 15,000.
  2. Next, determine the electron charge (C). For this problem, the electron charge (C) is given as 1.6 * 10 ^-19 C.
  3. Finally, calculate the Total Charge using the equation above: 

Qtotal = N * e

Inserting the values from above and solving the equation: 

Qtotal = 15000 * 1.6 * 10 ^-19 = 2.4 e-15 (Coulombs)

Example Problem #2: 

Using the same process as above, first define the variables required by the formula. In this case, these values are provided as the following:

total number of electrons = 200,000

electron charge (C) = 1.6 * 10 ^-19 C

Entering these values gives:

Qtotal = N * e = 3.2e-14 (Coulombs)