Text Statistics

Readability is not a matter of opinion — it can be measured. The Flesch Reading Ease score, developed by Rudolf Flesch in 1948, quantifies how easy a piece of text is to read based on sentence length and word complexity, producing a score from roughly 0 (very difficult, graduate-level) to 100 (very easy, plain language). Writers, educators, UX teams, and SEO professionals use this score to check whether their content matches the reading level of their intended audience before publishing.

Our text statistics tool calculates the Flesch Reading Ease score instantly, along with the underlying metrics that drive it: average sentence length, average word length, syllable count, and total word and sentence counts. Rather than guessing whether a paragraph "feels" too dense, you get an objective number and the grade-level interpretation that goes with it.

This matters for more than just writing style. Plain-language content tends to perform better in search results, converts better in marketing copy, and is required by law for certain government and healthcare communications in the United States.

Readability directly affects how content performs. Studies on web usability consistently show that most readers skim rather than read closely, and dense, complex sentences increase bounce rate and reduce time on page — both signals that can indirectly affect SEO performance. Content marketers and bloggers use readability scores to keep articles accessible to a general audience, typically targeting a Flesch score of 60–70 (roughly 8th–9th grade reading level) for mainstream web content.

Readability checks also serve regulatory and accessibility purposes. The U.S. federal Plain Writing Act requires government agencies to write public-facing documents in plain language, and many healthcare and legal organizations voluntarily target lower grade levels to ensure patients and clients actually understand consent forms, instructions, and policies. Educators use readability formulas to match reading materials to a student's grade level, and technical writers use them to catch documentation that has drifted into jargon-heavy, hard-to-parse prose without anyone noticing during the writing process.