Readability checker

See how easy your text is to read

Runs in your browser. Nothing is uploaded.

How it works

Readability scores estimate how hard text is to read, using sentence length and word length. The Flesch reading ease score runs from about 0 to 100, and higher is easier. Around 60 to 70 is plain English. This also gives a school grade, and lists long sentences to shorten. It doesn’t detect AI writing.

ease = 206.835 − 1.015 × words per sentence − 84.6 × syllables per word

Short sentences and short words score better. We estimate syllables with spelling rules, so scores are close, not exact.

A score can’t tell you if text is clear or true, so read it too.

Worked example. “The cat sat on the mat.” has 6 words and 6 syllables: 206.835 − 6.09 − 84.6 = 116.1.

Examples

Text	Ease	Level
The cat sat on the mat.	116.1	Very easy
We test each tool against outside sources.	91	Very easy
Comprehensive evaluation necessitates interdisciplinary collaboration.	-204.3	Very hard

What this tool doesn’t cover

These formulas were built for English.
Syllable counts are estimates.
This can’t tell who or what wrote a text.

Questions

What is a good score?

For the general public, aim for 60 or higher.

Can this detect AI writing?

No. It only measures how readable text is. Nothing here can tell who wrote it.

Is my text uploaded?

No. Everything runs in your browser, and nothing is saved or sent.

What is a Flesch reading score?

A score from long-used formulas, based on sentence length and syllables. A higher score means text is easier to read.

How do I make my writing easier to read?

Use shorter sentences, plain words and active verbs. One idea to a sentence is a good start.

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Built by QuickToolz.

Sources: Flesch-Kincaid readability tests (opens in a new tab)