Readability Checker
Paste your text to get the Flesch Reading Ease score, grade level and 5 other readability formulas — with hard sentences, passive voice and adverbs highlighted so you know what to fix.
Readability scores
Highlights
Hard sentence Very hard sentence Passive voice Adverb Complex word
Your text is analysed in your browser and never uploaded.
How to Check Readability
Three steps to clearer writing.
Paste Your Text
Paste a blog post, email, essay or web page text into the box.
Read the Scores
See your Flesch Reading Ease, grade level, reading time and more — updated as you type.
Fix the Highlights
Shorten yellow and red sentences, swap passive voice for active, and cut extra adverbs.
Formulas
6 readability scores
Highlights
Hard sentences & passive
Also shows
Reading time
Speed
Live as you type
Privacy
Runs in your browser
Price
100% free
Flesch Reading Ease Score Table
Most web content should aim for 60 or higher.
| Score | Difficulty | Reading level |
|---|---|---|
| 90–100 | Very easy | 5th grade (age 11) |
| 80–89 | Easy | 6th grade |
| 70–79 | Fairly easy | 7th grade |
| 60–69 | Plain English | 8th–9th grade (age 13–15) |
| 50–59 | Fairly difficult | 10th–12th grade |
| 30–49 | Difficult | College |
| 0–29 | Very difficult | College graduate |
What Can You Use It For?
Popular ways people use Readability Checker.
SEO & Blogging
Easy-to-read content keeps visitors on the page longer.
Emails & Newsletters
Clear emails get more replies and clicks.
Students & Teachers
Check essays and choose texts for the right grade.
Plain-Language Writing
Make policies, instructions and health information easier to understand.
Tips for the Best Result
- Keep most sentences under 20 words; split anything over 30.
- Prefer short, common words: use instead of utilise, help instead of facilitate.
- Use active voice: "The team approved the report" instead of "The report was approved by the team".
- Readability formulas work best on 100+ words — very short texts give unstable scores.
- Count words and characters with our Word Counter.
Frequently Asked Questions
Quick answers about Readability Checker.
For most websites and general readers, aim for a Flesch Reading Ease of 60–70 or higher and a grade level of 8 or lower.
A score from 0 to 100 based on sentence length and syllables per word. Higher scores mean easier text.
It shows the US school grade needed to understand the text. Grade 8 means a typical 13–14-year-old can read it.
Flesch Reading Ease, Flesch–Kincaid Grade, Gunning Fog, SMOG, Coleman–Liau and the Automated Readability Index, plus an average grade.
Not as a direct ranking factor, but readable content keeps people reading, which helps engagement and conversions.
Sentences where the subject receives the action, like "was approved by". The tool highlights common patterns; not every passive sentence is wrong.
The formulas were designed for English. Other languages will give rough results only.
No. Everything is analysed in your browser and nothing is uploaded.
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