Is Your Content Too Hard to Read?
Most successful web content reads at a 6th to 8th grade level. Not because readers are unsophisticated, because people scan online content quickly, and complex sentence structures slow them down. The New York Times writes at roughly an 8th grade level. Hemingway wrote at a 4th grade level. Your blog post about project management probably shouldn’t read like a PhD dissertation.
Paste your text and get two scores: Flesch Reading Ease (0-100, higher is easier, aim for 60-70 for web content) and Flesch-Kincaid Grade Level (the US school grade needed to understand it, aim for 6-8). You’ll also see average words per sentence and what percentage of your words are complex (three or more syllables).
Why Readability Matters for SEO
Google hasn’t confirmed readability as a direct ranking factor, but the indirect effects are undeniable. Content that’s easy to read gets longer dwell times, lower bounce rates, and more shares. Content that reads like a legal contract gets abandoned after two paragraphs. The engagement signals from readable content improve your SEO whether Google measures readability directly or not.
Interpreting Your Scores
Your blog post comes back at grade level 12. You’re writing for a general audience. That’s a problem. Break those 35-word sentences into two shorter ones. Replace “utilize” with “use,” “facilitate” with “help,” “methodology” with “method.” Switch from passive voice to active voice. These changes alone can drop you two or three grade levels.
A score of 12 isn’t bad for academic papers or technical documentation aimed at specialists. But for marketing pages, blog posts, and general web content? You want 6-8. That’s the sweet spot where you’re clear without being condescending.
The Formulas
Flesch Reading Ease: 206.835 - 1.015 x (words/sentences) - 84.6 x (syllables/words). The two biggest levers are sentence length and syllable count. Shorter sentences and simpler words push the score up.
Flesch-Kincaid Grade Level: 0.39 x (words/sentences) + 11.8 x (syllables/words) - 15.59. Same inputs, different weighting. A grade level of 8 means an average 8th grader can follow the text.
Use this alongside the Keyword Density analyzer for broader content optimization. The tool processes text in your browser, nothing gets transmitted.