Reading Level Calculator
Check how hard your text is to read. Six readability formulas (Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, SMOG, Coleman-Liau, Automated Readability Index) in one tool, all in your browser, no upload.
Reading Level Calculator — Paste your text and get six standard readability scores at once: how easy it is to read, what US grade level it targets, and how much education a reader needs to understand it on a first pass.
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What is reading level calculator?
Paste your text and get six standard readability scores at once: how easy it is to read, what US grade level it targets, and how much education a reader needs to understand it on a first pass.
Useful for writers checking blog posts for a target audience, teachers building reading lists, marketers making sure landing-page copy does not scare off the average visitor, and anyone who edits prose for a living.
How to use it
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Paste your text
A few sentences to several pages. The formulas need at least 3 sentences for accurate SMOG.
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Read the six scores
Each formula answers a slightly different question. Look at them together.
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Read the interpretation
The Flesch Reading Ease score comes with a one-line plain-English interpretation.
Examples
Aiming for general-audience writing
For a blog, a landing page, or marketing copy, the target is Flesch Reading Ease 60+ (8th-9th grade). If your score is below 50, your text is college-level — most of your audience will bounce.
The utilization of synergistic optimization paradigms facilitates the operationalization of comprehensive deliverables.
Result: Flesch Reading Ease ~5, Flesch-Kincaid Grade ~20. Way above the average reader. Rewrite in plain English.
Checking academic writing
For a journal article, a textbook, or technical documentation, Flesch-Kincaid Grade 12-16 is normal. Below 10 reads as too casual; above 18 reads as needlessly dense.
The results demonstrate a statistically significant correlation (p < 0.05) between exposure and outcome.
Result: Flesch-Kincaid Grade ~12. Appropriate for a journal or technical doc.
Frequently asked questions
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Last reviewed: 2026-08-17