How to Use the Readability Score Checker
- Paste your text into the input box — this can be a blog post, article, landing page copy, email, product description, or any written content.
- Review the text statistics — word count, sentence count, syllables, reading time, average words per sentence, and average syllables per word update in real time.
- Check your readability scores — the three scores (Flesch Reading Ease, Flesch-Kincaid Grade Level, and Gunning Fog Index) each measure complexity from a different angle.
- Improve your writing — if your scores indicate high complexity, shorten sentences, replace long words with shorter alternatives, and break up dense paragraphs.
Understanding the Readability Scores
Each readability formula measures text complexity using slightly different calculations. Here is what each one means and what to aim for:
- Flesch Reading Ease (0–100, higher = easier) — the most widely used readability metric. A score of 60–70 is considered “standard” and appropriate for general-audience web content. Scores of 70–80 are ideal for marketing emails, blog posts, and social copy. Academic papers typically score below 30.
- Flesch-Kincaid Grade Level — translates reading ease into a US school grade level. Grade 8 means an 8th grader can understand the text. For general web content, aim for Grade 6–8. For professional or B2B content, Grade 10–12 may be appropriate.
- Gunning Fog Index — measures the years of formal education a reader needs to understand the text on first reading. A Fog index of 12 corresponds to a high school senior. Most popular websites and newspapers target a Fog index of 8–12.
Why Readability Matters for SEO and Content Marketing
- Time on page — content that is easier to read keeps visitors engaged longer, which signals quality to search engines and reduces bounce rate.
- Conversion rates — clearer copy converts better. Visitors who understand your message quickly are more likely to take action.
- Yoast SEO scoring — Yoast and RankMath both include readability checks in their SEO scoring. Flesch Reading Ease above 60 contributes to a green readability score in Yoast.
- Accessibility — simpler writing is more accessible to readers with cognitive differences, non-native English speakers, and people reading on small screens.
- Email performance — emails written at a Grade 3–5 reading level have consistently higher open and click rates than more complex alternatives, according to multiple industry studies.
Want to count exact words and characters after improving your text? Use our Word & Character Counter.
Frequently Asked Questions
What is a good Flesch Reading Ease score?
For most web content, a score of 60–70 is ideal. Marketing copy and emails benefit from scores of 70–80, which represent conversational, easy-to-read English. Scores below 30 indicate highly complex text suitable for academic or technical audiences only.
What reading grade level should I target?
For general consumer-facing web content, Grade 6–8 is the recommended range. This matches the reading level of most major newspapers and popular websites. B2B and professional content can go up to Grade 10–12 without losing readers.
How accurate is the syllable count?
The syllable count uses a standard algorithmic approximation optimised for English. It is highly accurate for common words but may slightly miscount unusual words, proper nouns, or technical terms. For the purposes of readability scoring, the approximation is sufficient.
Does this tool store my text?
No. All analysis runs locally in your browser. Your text is never sent to any server or stored anywhere.
Is this readability checker free?
Yes, completely free with no account required and no usage limits.
Explore more free content tools: Word & Character Counter, Clear Text Format Tool, Email Subject Line Tester, and Text Case Converter.