ProToolBox

Sentence Counter Online — Live Sentences, Paragraphs & Rhythm

Paste or type below. The sentence total stays large and updates on every keystroke—no upload, no signup, no watermark.

Sentence counter input and results

One screen for sentences, paragraphs, average length, shortest & longest sentence previews, reading time, and common openers—live as you edit.

1 Paste or type · 2 Edit · 3 Live sentence stats · 4 Copy report

Live results

Splits on . ? ! after trim. No closing punctuation yet? The whole paste counts as one sentence. Paragraphs = blocks split by a blank line.

Runs in this tab only—no server upload, no signup, no watermark.

Your sentence stats will show here.

The big number is total sentences. Paragraphs, rhythm, reading time, longest and shortest sentence previews, and top openers update live—no upload.

Next: Line counter · Word counter · All text tools · All tools

  • Works in your browser—runs on your device, not our servers
  • No upload required—your input stays in this tab
  • Free and instant
  • No account needed
  • Private by default—the same ProToolbox promise on every page

What this is for

Sentence Counter Online — Live Sentences, Paragraphs & Rhythm is part of the ProToolbox text stack: works in your browser, no upload required, free and instant. Paste, measure or clean, copy—before publish, deadlines, or tight character limits.

  • Re-run after every real edit; limits drift fast
  • Pair with reading time or keyword tools when SEO or ads matter
  • No account needed—your draft stays in this tab
  • Cover letters, meta text, captions, attachments

Remember: Apps count characters differently—when a cap is hard, match the destination’s rules.

Bookmark this page—editors and students re-check sentence counts all week. One tab beats reopening five apps.

Built for drafts and limits

Use it before you paste into Docs, Word, Notion, or a CMS—every editor guesses sentences a little differently. Here you see exactly what is in the box, refreshed live, with no server round-trip.

How it works

  1. Paste or type in Your text. Live results update instantly (side-by-side on wide screens, stacked on mobile).
  2. Read the large sentences total first, then paragraphs, words, rhythm, reading time, shortest vs longest sentence, and top openers when your sample is long enough.
  3. Use the gray What this means / Next box under the stats, then Copy report to export plain-text metrics.

What each metric means

  • Sentences — regex split on terminal punctuation; abbreviations (e.g. “Dr.”) can differ from Word.
  • Paragraphs — one or more blank lines between blocks.
  • Avg / min / max words — per detected sentence; flags run-ons vs choppy fragments.
  • Reading time — ~200 wpm from total words; tune with Reading time.
  • Top openers — first word of each sentence; pairs with Word frequency for deeper repeats.
  • Shortest preview — shown when you have two or more sentences and the shortest is shorter than the longest (same rules as min/max word counts).

Privacy: Counting is designed to run locally in your browser. We do not store your paste on our servers.

FAQ

  • Is my text uploaded? No—everything runs in your browser until you choose Copy report.
  • Do I need an account? No signup; the tool is free.
  • Why do counts differ from Google Docs or Word? Hidden formatting and smart punctuation change splits; this page uses the characters you paste.
  • What does Copy report include? Plain-text lines: sentences, paragraphs, words, lines, averages, min/max, sentences per paragraph, reading time.
  • Can I use it on my phone? Yes—the layout stacks; paste, edit, and copy the same way.

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