Experiment
Readability Checker
Paste any text and quickly measure how easy it is to read with sentence-level stats and Flesch scoring (a formula that grades text from 0 to 100 based on word and sentence length).
Your input stays in the browser — nothing is sent to a server. Privacy policy.
Best for
- Content designers and UX writers improving clarity.
- Marketing teams checking campaign copy readability.
- Editors reviewing long-form drafts before publishing.
When to use
- A text feels heavy and you need objective readability signals.
- You want to compare two versions of the same draft.
- You need fast stats before sharing content internally.
Input
Paste your text
Paste any prose — a blog post, README, email, or doc. Scores update instantly.
Try this example
Compare a dense paragraph to a clean rewrite.
Action: Paste the dense version, check the score, then paste the clear version to see how the metrics shift.
Dense input
In order to facilitate a more comprehensive understanding of the multifaceted operational paradigms that our new synergistic platform offers, it is highly recommended that all users thoroughly examine the documentation provided.
Clear rewrite
We recommend reading the docs to understand how the new platform works.
Do not rely on this for: Judging accuracy or truth. A text can have a perfect readability score but still contain completely false information.
Writing workflow
Clean, measure, revise, then compare.
Readability is most useful as one checkpoint in a practical editing loop, not as the final judge of a draft.
Experiment scope
What it does
Measures Flesch Reading Ease, Flesch-Kincaid Grade, word count, sentence count, and average sentence length on pasted text.
What it does not do
Judge writing quality, account for your audience's expertise level, or assess accuracy, voice, or intent.
Why it is still an experiment
Readability formulas are rough proxies. The right thresholds depend on your content type and reader — this gives signal, not verdicts, and the scoring model may be updated.
FAQ
What does the Flesch score mean?
The Flesch score is a rough readability signal. Higher scores usually mean the text is easier to read.
Can readability scores judge writing quality?
No. They help spot density, long sentences, and friction, but they cannot judge nuance, accuracy, or voice.
Does the checker send my text to a server?
No. The analysis runs locally in your browser.
Found an issue or have a suggestion? Report an issue or suggest an improvement.