Readability Checker
Readability Checker is a free tool that gives your text a Flesch Reading Ease score and grade level, and highlights long sentences and passive voice to fix.
- Free
- No sign-up
- Runs in your browser
Paste any page, post or email and see how easy it is to read. You get the Flesch Reading Ease score and school grade level, the long sentences highlighted right in your text, a count of passive-voice and -ly words, and a plain verdict on whether your customers will find it easy going. Everything runs in your browser; nothing you paste is sent anywhere.
Your workspace
Fill in the details above, then press the button to see your result.
What the score means
These formulas were built for English and rely on counting syllables, which we estimate. Scores on Hindi or Hinglish text will not be meaningful.
Guide
How to use it
- 1Paste your text — a service page, a Google post, a WhatsApp message or a blog draft.
- 2Read the verdict and the Reading Ease score. Aim for 60 or higher for customer-facing pages.
- 3Scroll to your text below: sentences shaded amber are over 25 words. Split each one into two.
- 4Check the underlined sentences. Rewrite them so the person doing the action comes first.
- 5Paste the new version and watch the score rise.
What the results mean
- Flesch Reading Ease
- A score from 0 to 100 based on how long your sentences are and how many syllables your words have. Higher is easier. Most customers are comfortable at 60 and above.
- Grade level
- The Flesch-Kincaid grade: roughly the years of schooling a reader needs to follow the text easily, on the US school scale. Grade 8 or below suits most business writing.
- Passive voice
- A sentence where the doer is hidden or comes last, such as “your order was delivered” instead of “we delivered your order”. It is not wrong, but too much makes writing vague and slow.
- Adverbs
- Words ending in -ly, such as “really” or “extremely”. A few are fine; many usually mean a stronger, more specific word would do the job better.
Common questions
Does readability affect my Google ranking?
Not directly — Google does not use a Flesch score. But pages people can understand quickly keep visitors reading and get more enquiries, and that is what you actually want from ranking.
What score should I aim for?
For pages customers read — your home page, service pages, Google posts — aim for 60 or higher. Technical or legal pages can sit lower, but keep sentences short even there.
Does it work for Hindi or Hinglish text?
No. Both formulas were built for English and depend on counting English syllables. On Hindi or mixed text the numbers will be meaningless, so use it only on English copy.
Why does the passive voice check miss some sentences?
It is a simple pattern check — a word like “was” or “been” followed by a word ending in -ed. It catches most cases but misses irregular verbs like “was written”, so treat it as a hint rather than a rule.
Guides on this topic
- How to Write Content for AI Overviews (With Examples)How to write content for AI Overviews: what Google says, what makes a paragraph quotable, and five before-and-after rewrites you can copy.
- Can ChatGPT Help With SEO? Practical Uses and LimitationsWhat ChatGPT can and cannot do for your SEO: practical uses, limits like made-up facts and no search data, and what Google says about AI-written content.
- Website Accessibility: Simple Fixes for Small BusinessesTen plain fixes that make a small business website usable for older customers and people with disabilities, plus a ten-minute test you can run today.
- On-Page SEO Checklist: 15 Checks for Any Web PageA 15-point on-page SEO checklist in the order things appear on a page: address, title, headings, content, images, links and the technical minimum.