Sentence Counter

A sentence counter goes beyond a raw count — it tells you whether your prose is readable. This tool counts sentences accurately, then highlights your longest and shortest sentence, computes the average sentence length in words, and surfaces a readability grade so you can tell at a glance whether your draft is too dense for its audience.

Editors use sentence-level metrics to spot the writing patterns that quietly kill clarity: a string of thirty-word sentences in a how-to, a mixture of fragments dropped into formal copy, or a single buried ninety-word paragraph-killer. Spotting those at the sentence level is faster than re-reading the whole document, and the highlights point straight to the offending lines.

All processing happens in your browser. Sentences are split using punctuation rules and abbreviation handling client-side — no upload, no signup, no logging of your draft. Paste anything from a personal letter to a confidential brief and the moment you close the tab, the analysis is gone.