FREE TOOL · NO AI · PASTE & SCORE
Readability Score Checker
Paste your product copy, landing page content, or blog post. Get Flesch-Kincaid reading ease, grade level, Gunning Fog, and SMOG scores instantly — with a plain-English interpretation.
Readability Score Checker
Flesch-Kincaid score for your copy.
What you get
4 readability scores
Flesch-Kincaid Reading Ease, FK Grade Level, Gunning Fog Index, and SMOG Grade.
Text statistics
Word count, sentence count, average sentence length, and average syllables per word.
Grade-level verdict
Plain-English interpretation: "This copy reads at Grade 9. Aim for Grade 7."
How it works
Paste your copy
Any text: landing page, onboarding emails, UI copy, blog post. Minimum 50 words.
Scores calculated
All 4 readability formulas run client-side, instantly — no API call.
See your grade
Get a reading level, score interpretation, and 2–3 specific improvement tips.
Why use this
Copy that converts reads at Grade 7–8
Research consistently shows landing pages at Grade 7 reading level have higher conversion rates. This tool shows exactly where you are.
Zero API
Runs in your browser. Paste 10,000 words. No rate limits, no cost, works offline.