Readability Checker – Flesch Score & Grade Level

Check how easy your writing is to read — Flesch reading ease, grade level, Gunning Fog, SMOG and more, updated as you type.

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Flesch reading ease—

Readability score checker

Clear writing gets read, shared and acted on. This readability checker scores your text with theFlesch reading ease formula and estimates the school grade level needed to read it, using five well-known formulas — Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau and the Automated Readability Index. It also shows average sentence length and the share of long words, so you know exactly what to simplify in blog posts, emails, reports, product descriptions and assignments.

How to use it

  1. Paste your English text.
  2. Read the scores — they update as you edit.
  3. Shorten long sentences and swap long words, and watch the score improve.

Formula

Flesch reading ease = 206.835 − 1.015 × (words ÷ sentences) − 84.6 × (syllables ÷ words)

Example

The sample's first two sentences are short and simple, but the last one runs to more than 30 words with several long words, which pulls the overall score into the “difficult” range. Splitting that sentence into three raises the reading ease substantially. Count words and reading time with the word counter, and fix capitalisation with the case converter.

Frequently asked questions

What is the Flesch reading ease score?
A score from about 0 to 100 based on sentence length and syllables per word. Higher is easier: 60–70 is plain English most adults read comfortably, 80+ is easy, and below 30 is very difficult (academic or legal text).
What does the grade level mean?
It estimates the years of schooling needed to understand the text easily. A Flesch-Kincaid grade of 8 means a typical 13–14-year-old (Class 8) could read it. Most websites and news articles aim for grade 7–9.
How can I make my writing easier to read?
Use shorter sentences (15–20 words on average), prefer everyday words to long ones, write in the active voice, and break long paragraphs up. The scores here update as you edit, so you can see the effect immediately.
Does it work for Hindi?
These formulas were designed for English and rely on English syllable patterns, so scores for other languages aren’t meaningful. Word and sentence counts still work.

Word & Character Counter

Count words, characters, sentences and paragraphs as you type, with reading time and social media character limits.

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