Readability Checker
Check your text's readability with six industry-standard formulas - Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau, and ARI. See the grade level, audience recommendation, and reading time instantly.
Analyze Readability in 3 Steps
Paste your text, click Analyze, and get a full readability breakdown with six formulas, a grade-level gauge, and audience recommendation.
Readability Checker - 6 Formulas, Visual Dashboard, Audience Insights
Readability determines whether your audience actually understands what you write. Search engines favor clear, accessible content. Readers stay longer on pages they can read easily. This Readability Checker analyzes your text with six industry-standard formulas and presents the results in a visual dashboard you can understand in seconds.
Unlike basic checkers that give you a single score, this tool shows all six formulas side-by-side, a visual grade-level gauge, an audience recommendation card with estimated reading time, and a full text statistics breakdown - all processed instantly in your browser.
Six Readability Formulas Explained
This Tool vs. Basic Readability Checkers
| Feature | Basic Checkers | This Tool |
|---|---|---|
| Number of formulas | 1-2 | 6 (all major formulas) |
| Visual grade gauge | No | ✓ Animated gradient bar |
| Audience recommendation | Rare | ✓ With emoji + description |
| Reading time estimate | Sometimes | ✓ Minutes + seconds |
| Score color coding | Basic | ✓ Green/amber/red + labels |
| Text statistics | Limited | ✓ 8 metrics including complex word % |
| Short text warning | No | ✓ Accuracy warning for <100 words |
| Privacy | Varies | ✓ 100% browser-based |
Features of This Tool
Who Uses Readability Checkers?
FAQs – Readability Checker
Six formulas: Flesch Reading Ease (0-100 score), Flesch-Kincaid Grade Level, Gunning Fog Index, Coleman-Liau Index, SMOG Index, and Automated Readability Index (ARI). Each uses a different approach to measure text difficulty.
For general web content, aim for 60-70 (Standard). Scores above 70 are fairly easy to read. Blog posts and marketing copy typically target 60-80. Academic writing may score 30-50.
For general audiences and web content, target grade 7-8. Most popular newspapers write at this level. Healthcare materials should target grade 6-8. Academic papers naturally score higher at grade 12-16.
It averages the five grade-based formulas (FK, Fog, Coleman-Liau, SMOG, ARI) and plots the result on a gradient bar from green (easy) through amber to red (difficult). The purple marker shows where your text falls.
The tool uses a vowel-group algorithm enhanced with rules for silent-e, the -le suffix, the -ed suffix, and a dictionary of 60+ common English exceptions. This provides accuracy comparable to commercial readability tools.
Words with three or more syllables. The Gunning Fog Index and SMOG Index specifically use complex word counts. The tool shows both the count and percentage of complex words in your text.
Based on the average adult reading speed of 238 words per minute. The tool divides your word count by 238 to estimate the time needed to read the entire text.
Readability formulas need a meaningful sample to be accurate. With fewer than 30 words, the statistical measures become unreliable. For best results, use 100+ words. A warning appears for shorter texts.
Completely. All six formulas run in your browser using JavaScript. Your text is never sent to any server, stored, or tracked.
Yes. While readability is not a direct Google ranking factor, it impacts user engagement metrics. Readers stay longer on pages they can understand, reducing bounce rates and improving time-on-page - signals that search engines do consider.
Check Your Readability Score
Six formulas, a visual grade-level gauge, audience insights, and reading time - all from a single click. Free, private, browser-based.
📊 Analyze Readability Now