Good prose mixes sentence lengths, and this analyzer measures that rhythm so you can spot problems fast. It breaks your text into sentences, then reports the average, longest and shortest sentence in words, plus the total sentence count. Long sentences over about 25 words are flagged and highlighted, since these are the ones that most often confuse readers and could be split. Seeing the numbers helps you catch two common issues: a wall of long sentences that tires readers, or a run of short ones that feels choppy. Aim for an average near 15 to 20 words for general audiences and vary the length on purpose for pace. The tool updates as you type and shows the highlighted long sentences inline. Everything is computed locally in your browser, so your draft stays private and nothing is uploaded.
It shows the average, longest and shortest sentence lengths and flags sentences that run overly long.
Mixing short and long sentences improves rhythm and readability, so seeing the spread helps you vary your pacing.
Very long sentences of 30 or more words can be hard to follow, so those are flagged for you to consider splitting.
Good prose mixes sentence lengths, and this analyzer measures that rhythm so you can spot problems fast. It breaks your text into sentences, then reports the average, longest and shortest sentence in words, plus the total sentence count.
Yes. Sentence Length Analyzer is completely free, with no sign-up and no usage limits.
Yes. Sentence Length Analyzer runs in any modern web browser. There is nothing to download or install.
Yes. Sentence Length Analyzer runs entirely on your device in your browser, so nothing you enter is uploaded to a server.