Make your blog posts and documents easier to read with instant readability scores and highlighted issues.
What is the Readability Checker?
Easy-to-read content keeps visitors on your page longer, ranks better and converts more. This readability checker calculates the Flesch Reading Ease score, the Flesch-Kincaid grade level and the Gunning Fog index, then highlights long sentences and possible passive voice so you know exactly what to fix.
It is ideal for blog posts, product descriptions, school essays, emails and website copy – and gives the same kind of feedback as the Yoast SEO readability analysis in WordPress.
How to use the Readability Checker
- Paste your text.
- Check the scores – aim for 60+ on Flesch Reading Ease for general audiences.
- Shorten highlighted sentences and rewrite passive voice.
Flesch Reading Ease scale
| Score | Level |
|---|---|
| 90–100 | Very easy |
| 70–89 | Easy / fairly easy |
| 60–69 | Plain English – best for the web |
| 50–59 | Fairly difficult |
| 0–49 | Difficult (academic) |
How to improve readability
- Keep sentences under 20 words.
- Use short, common words.
- Write in active voice: “The team wrote the report.”
- Use subheadings and bullet points.
Frequently asked questions
What score should a blog post have?
60–70 or higher is a good target for most audiences.
Does readability affect SEO?
Indirectly – easier content keeps readers engaged, which helps rankings.
Is the passive voice detection perfect?
It is a guide based on common patterns; review each highlight.
Does it work for other languages?
The formulas are designed for English.
This readability checker is 100% free, needs no signup and works on phones, tablets and computers. Your data is processed in your browser and never uploaded.
Last updated: · By NodifyTech