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Readability checker

Flesch reading ease, grade level and long sentences for English text.

  • Free
  • No sign-up
  • Works on any device

About Readability checker

Scores English text with the Flesch reading ease formula, which uses average sentence length and syllables per word, and gives a grade level. Higher ease scores mean simpler text; 60 to 70 is plain English. It also points out very long sentences that make readers stumble.

How to use Readability checker

  1. Paste your English text.
  2. Read the Flesch score and grade level.
  3. Shorten the long sentences it points out and check again.

Why use this tool?

Also known as

Frequently asked questions

What is a good Flesch reading ease score?

Scores of 60 to 70 are considered plain English, understood by most adults. Web content often aims for 60 or higher, while technical or legal text scores lower.

How is the Flesch score calculated?

It uses the average sentence length and the average number of syllables per word. Shorter sentences and shorter words raise the score, making the text easier to read.

Does a high score mean good writing?

No. It only measures how simple the sentences and words are. Clear, accurate and useful writing also depends on content, so use the score as one hint among others.

Is Readability checker free?

Yes. Readability checker on Toolipedia is free to use, with no sign-up and no watermark.

Is it safe to use?

Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.

Does it work on my phone?

Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.

Do I need an account?

No. Just open the page and use the tool. There's no sign-up and no email needed.

Can I put Readability checker on my own website?

Yes. Use the Embed on your site button under the tool to copy a short piece of code and paste it into your page. It is free, needs no account, and the tool keeps working inside your page.

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