Sentence Counter — analyse your writing

Our free Sentence Counter goes beyond simply counting sentences — it gives you a complete readability analysis of your text in real time. As you type or paste, the counter tracks sentence count, paragraph count, word count, character count, average sentence length, the longest sentence in your text, the shortest sentence, and a Flesch Reading Ease score — the industry-standard readability metric used by publishers, educators, and content strategists worldwide.

The Flesch Reading Ease score rates text on a scale from 0 to 100. Scores of 70–80 indicate text easily understood by a 7th grader — ideal for consumer brands and general audiences. Scores of 60–70 are considered plain English suitable for most adults — the target for most blog posts, web copy, and marketing material. Scores of 30–50 are typical of academic writing and professional journals. Our counter calculates your Flesch score live, so you can see in real time how your writing difficulty changes as you edit.

The ideal sentence length for web content is 15–20 words. Sentences longer than 25 words are significantly harder to parse — readers lose the thread and disengage. But variety matters too: writing with uniform sentence length feels monotonous. Our longest and shortest sentence indicators help you identify outliers — the 45-word sentence that needs breaking up, or the three consecutive 8-word sentences that need more rhythm. Whether you're a writer editing for clarity, a student checking your essay's readability, or a content marketer optimising for a specific audience, our Sentence Counter gives you the analysis you need to write with precision and confidence.