Readability Checker

Flesch Reading Ease runs from 0 to 100, where a higher score is easier to read. Flesch-Kincaid Grade Level maps the same text to a U.S. school grade, so a grade of 8 means a typical eighth grader can follow it. The reading level label translates the ease score into plain words like Easy or Difficult.

For general web content, aim for a Flesch Reading Ease of 60 to 70 and a Flesch-Kincaid grade around 7 to 9. That range reads clearly for most adults. Technical or academic writing naturally lands lower, but if your blog scores below 30 most readers will struggle.

Each word is lowercased, then runs of vowels (a, e, i, o, u and y) are counted as syllables. A trailing silent e is removed, and every word counts as at least one syllable. It is a fast heuristic, so unusual spellings can be off by one, but the totals are close enough for reliable scoring.

Shorten long sentences, break up big paragraphs and replace long or rare words with shorter everyday ones. Because both formulas reward fewer words per sentence and fewer syllables per word, small edits like splitting one long sentence into two move the score quickly.

Words are runs of letters, digits or underscores, matching the same token rule as most word counters. Sentences are counted by groups of period, exclamation or question marks, and any non-empty text counts as at least one sentence.

Yes. The analysis runs entirely in your browser. Nothing you paste is uploaded, logged or stored.