Online Sentence Counter

Count sentences, words and characters, with average words per sentence

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Avg words/sentence

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Nothing you type here is ever sent anywhere — counting happens entirely in your browser as you type.

About this tool

This counter detects sentence boundaries by looking for runs of text ending in a period, exclamation mark, or question mark, then reports how many sentences, words, and characters your text contains along with the average number of words per sentence — a common readability signal. It updates live as you type, so you can watch the metrics shift while you edit, which is useful for tightening up writing that's running long-winded or checking a piece against a target sentence-length guideline.

How does it decide where one sentence ends and the next begins?

It looks for a run of characters that ends in one or more of . ! or ?, and counts each such run as one sentence. This is a simple heuristic — it can occasionally miscount abbreviations like "Dr." or "e.g." as sentence endings, similar to most lightweight sentence counters.

What counts as a "word" for the word count?

Any run of non-whitespace characters separated by spaces or line breaks counts as one word — so hyphenated words and numbers are each counted as a single word.

Why is average words per sentence useful?

Very high averages often signal long, run-on sentences that can hurt readability. Many style guides recommend keeping the average around 15-20 words per sentence for general audiences, so this metric gives you a quick gut-check while editing.

How many sentences, really

Paste or type, and four figures update straight away: sentences, words, characters, and the average number of words per sentence. That last one is the quick way to tell whether your writing is getting heavy.

A sentence here ends at a period, question mark or exclamation mark, so the count follows your punctuation. Short punchy sentences pull the average down; long chains of clauses push it up. Many style guides suggest keeping the average somewhere in the teens or low twenties for general readers.

It's useful for school assignments with a sentence requirement, for checking an abstract or a product description, and for editing: if the average is over thirty, split a few sentences.

A quick example

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Hello there. How are you? I am fine!
Result
3 sentences · 8 words · 36 characters · 2.7 words per sentence

Good to know

Abbreviations like "e.g." or "Dr." contain periods and can make the count run slightly high. Check the number if your text is full of them.