Sentence Counter
Count sentences and the average words per sentence in your text.
- Sentences
- 0
- Words
- 0
- Avg words / sentence
- 0
- Longest sentence
- 0
Quick answer
Count sentences and the average words per sentence in your text.
How do I use the Sentence Counter?
- 1
Paste or type your text into the input area.
- 2
Watch the sentence count and average sentence length update in real time.
- 3
Adjust your text until the sentence length matches your target readability.
What is the Sentence Counter?
The Sentence Counter tells you how many sentences your text contains and the average number of words per sentence. It updates in real time so you can rewrite until you hit a comfortable rhythm.
Average sentence length is one of the strongest predictors of readability. Aim for shorter, punchier sentences and both human readers and search engines will find your content easier to follow.
Who is the Sentence Counter for?
Content writers targeting a specific readability score, teachers grading student writing, editors tightening manuscripts, and non-native English writers checking sentence length.
Why use the Sentence Counter?
- Live sentence and average-length calculations.
- Sensible handling of common abbreviations like Mr., Dr. and e.g.
- Word counts included alongside sentence counts.
- Works instantly on very long documents.
- Zero server calls - everything is local.
When should I use the Sentence Counter?
- Editing a blog post to hit a target readability grade.
- Reviewing a student essay for sentence variety.
- Tightening marketing copy that feels too dense.
- Checking a translation for over-long sentences.
- Improving your own writing by measuring average length.
Is the Sentence Counter safe and private?
Yes. This tool runs entirely inside your browser - your text is never uploaded, stored on our servers or shared with third parties. You can even disconnect from the internet after the page loads and it will keep working. That makes it safe for confidential notes, drafts, private messages and unpublished work.
How do I get the best results from the Sentence Counter?
- Aim for an average sentence length of 15–20 words for general audiences.
- Vary sentence length - a mix of short and long reads more naturally.
- Long lists and bullet points can inflate word counts without adding sentences.
- Combine with the Word Counter for a full readability snapshot.
Frequently asked questions
How are sentences detected?
Sentences are split on period, exclamation mark and question mark, with common abbreviations handled sensibly. It is very accurate for standard prose.
Do lists and headings count as sentences?
A list item or heading only counts as a sentence if it ends with sentence-ending punctuation.
Why does average sentence length matter?
Most style guides recommend keeping sentences under 20–25 words on average for readability. Shorter sentences are easier to scan.
Is my text stored?
No - everything runs in your browser.
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