“In general, it’s how easy to read your content is. Sounds obvious, right? But because people read at different levels, what a Master’s student considers readable is different than what a freshman in high school does. What’s readable to me might not be readable for you.

And if you write only to what’s readable for you without taking into account others, there will be misunderstanding, ambiguity, and frustration around your content. Thus…the readability score.

With tools like the Flesch-Kincaid Readability Tests, you can determine at roughly what level a reader needs to be to understand your text. There are other metrics and scales out there that take different elements into consideration, and some are more subjective than others. But for the most part, this is what goes into determining readability:”

Read the whole thing here.