Is your copy easy to read?
Paste landing-page copy, a thread, or an email. Get a Flesch Reading Ease score, grade level, and exactly what's making it heavy.
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What is the Readability Checker?
The Readability Checker is a free Flesch Reading Ease calculator for any copy you write. Paste a landing-page section, an X thread or an email and it returns your readability score out of 100, the grade level it reads at, average sentence length and the share of long words — plus plain-English tips on what to cut. If you've ever wanted a free readability score before you ship, this is it.
How to use it
- Paste a paragraph or two of your copy into the box.
- Tap "Score it" to get your Flesch Reading Ease score and grade level.
- Read the tips — shorten long sentences, swap big words, add white space — and re-score.
Frequently asked questions
What is a readability checker?
A readability checker measures how easy your writing is to read. This one calculates the Flesch Reading Ease score, the grade level, average sentence length and long-word percentage, then tells you in plain English what's making your copy heavy.
What is a good Flesch Reading Ease score?
For X posts, landing pages and email, aim for 60 or higher — that reads at roughly an 8th-grade level and sells well. Scores below 50 read like a contract and lose skimmers; below 30 is dense and academic.
Is this readability score tool free?
Yes. This Flesch Reading Ease calculator is 100% free with no login. Paste any paragraph and get your readability score, grade level and fixes instantly.
How is the Flesch Reading Ease score calculated?
It uses the standard Flesch formula: 206.835 minus 1.015 times average sentence length minus 84.6 times average syllables per word. Shorter sentences and simpler words push the score higher, which is why the tool flags long sentences and big words.
More free tools for X creators: Banger Score · Tweet Counter · all 30 free tools. Or try Slap Post to schedule and post your content automatically.