A readability checker measures how easy your writing is to understand. Whether you are crafting blog posts, marketing copy, academic papers, or technical documentation, knowing your readability score helps you tailor your language to your target audience. Text that scores well on readability is more likely to be read completely, shared, and acted upon.
This free readability checker calculates two industry-standard metrics: the Flesch Reading Ease score (0-100, where higher is easier) and the Flesch-Kincaid Grade Level (the US school grade needed to understand the text). It also displays average sentence length, average syllables per word, and total word, sentence, and syllable counts. A color-coded visual gauge gives you an instant snapshot: green for easy reading, yellow for moderate, and red for difficult.
All analysis happens in real time as you type, directly in your browser. Your text is never sent to a server, making this readability checker safe for confidential documents and draft content. Syllable counting uses a vowel-group heuristic that is accurate for the vast majority of English words. There are no usage limits and no account required.