It’s an equation that attempts to quantify how educated a person would need to be to understand a sample of English text. So *you* don’t have a gunning fog index of 15, some sample of something you wrote has an index of 15.
Honestly, the [Wikipedia](https://en.wikipedia.org/wiki/Gunning_fog_index) page explains how the score is generated and what it means simply and with good detail but in essence it’s a math formula based on the how long your sentences are and how large of words you use to come up with the number of years of school a person would need to understand it.
In a nutshell the formula things that 15 years of school would be required to understand whatever it is you wrote, meaning a person with 3 years of college.
Latest Answers