Free Readability Score Checker

Not directly — Google has never confirmed a Flesch score, or anything like it, as a ranking factor. But readability shapes the signals that do matter: a page that's a slog to read tends to lose readers faster, which shows up as shorter time-on-page and higher bounce rates — both things search engines can observe even without reading the text themselves. Easier-to-scan content also earns more backlinks and shares in practice, simply because more people finish it.

The Flesch Reading Ease score runs 0–100, and higher means easier: 90–100 is "very easy" (roughly a 5th-grade level), 60–70 is "plain English" that most adults read comfortably, and below 30 is "very difficult," the territory of dense academic or legal writing. Most web content — blog posts, product pages, help docs — performs best somewhere in the 60–70 range: clear without being condescending.

Context matters more than the number. A page explaining a complex technical topic to engineers can reasonably score lower than that and still be exactly right for its audience. Use this as a gut-check against your intended reader, not a universal target — if you're writing for beginners and the score comes back "difficult," that's worth a second look; if you're writing a deeply technical reference for experts, a lower score isn't automatically a problem.