Formal Charge Calculator

Free online formal charge calculator – calculate formal charge, enter the number of valence electrons, lone pair electrons and bonding electrons then click the calculate button.

Formal Charge:
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Formal Charge Formula

To calculate the formal charge, you can use the following formula:

FC = VE – (LPE + 0.5 BE)

  • FC = Formal charge of the atom
  • VE = Number of valence electrons
  • LPE = Number of lone pair electrons
  • BE = Number of bonding electrons

How to calculate formal charge?

Here’s a step-by-step guide

  • First, Determine the number of valence electrons
  • Next, Count the number of lone pair electrons
  • Next, Count the number of bonding electrons
  • Finally, Put all values into the above formula of formal charge

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