Sentence Counter – Complete Guide & Free Online Tool

A sentence counter counts how many sentences your text contains and the total words, then works out the average words per sentence — a useful readability signal. Free online tool included.

Published 2026-09-13

In this guide
  1. What is Sentence Counter?
  2. What is a sentence counter?
  3. Related Tools
  4. External Resources

What is Sentence Counter?

A sentence counter counts how many sentences your text contains and the total words, then works out the average words per sentence — a useful readability signal.

What is a sentence counter?

A sentence counter identifies the boundaries of each sentence — usually marked by periods, exclamation marks or question marks — and reports the total. It also shows the average number of words per sentence.

Related Tools

Explore other text tools: [Text Tools](/categories/text).

Related tools: [word-counter](/tools/word-counter), [readability-score](/tools/readability-score), [text-cleaner](/tools/text-cleaner).

External Resources

Wikipedia: Sentence (linguistics)

Related Tools

Word Counter Count words, characters, sentences, paragraphs and reading time in your text. Text Use Tool →
Readability Score Estimate how easy your text is to read with the Flesch score. Text Use Tool →
Text Cleaner Clean up messy text by removing extra spaces, trailing whitespace and blank lines. Text Use Tool →

Frequently Asked Questions

What is a sentence counter?
It counts the sentences in your text and computes the average sentence length.
Does it handle abbreviations?
Abbreviations with periods can be miscounted; results are best for plain text.
Is it free?
Yes, and it works entirely in your browser.

More Guides

Word Counter – Complete Guide & Free Online Tool A word counter counts the number of words in a text instantly. It also shows characters (with and without spaces), sentences, paragraphs, and an estimated reading time, all processed locally in your browser. Free online tool included. Read → Character Counter – Complete Guide & Free Online Tool A character counter reports how many characters your text contains, both with and without spaces. It also shows the word count, which is useful for social media, meta descriptions and forms with length limits. Free online tool included. Read → Reading Time Calculator – Complete Guide & Free Online Tool A reading time calculator estimates how long it takes to read your text by dividing the word count by a reading speed, typically 200–250 words per minute. It is widely used to display "X min read" on blogs. Free online tool included. Read → Uppercase Converter – Complete Guide & Free Online Tool An uppercase converter turns every letter in your text into a capital letter. Use it for headings, acronyms, code constants or emphasis. Free online tool included. Read →