Sentence counter with average sentence length
Enter any passage to count sentences, words, paragraphs, and characters while tracking average words per sentence. Every result is computed on your device, with no text sent elsewhere.
This is the free version
Works where you write
PromptDC rewrites selected text in any app, every browser, your IDE and your terminal on Mac and Windows.
One keyboard shortcut
Select text, press Cmd+Shift+E or Ctrl+Shift+E, review the result, then Replace or Copy. It never presses Enter for you.
Your profiles, your models
Pick a default profile per app, or bring your own API key on the Lifetime plan.
Free here: unlimited, this utility runs entirely in your browser. In the app: from $9/mo, or Lifetime from $69 with your own API key.
More before and after examples
Museum exhibit introduction
For nearly fifty years, the Harbor Workshop built navigation instruments for fishing crews along the northern coast. Its restored tools reveal how local craftspeople adapted precise metalwork to rough weather and changing boats. The exhibition follows that work from early hand-cut compasses to the workshop's final electronic depth gauges.
Sentences: 3 | Words: 49 | Paragraphs: 1 | Average: 16.3 words per sentence
Why the rewrite is better: The measured average confirms that the introduction uses moderately developed sentences without letting one carry the entire chronology, helping an editor assess its rhythm before display.
A sentence total can confirm assignment length, but the average adds a useful signal about pacing and readability. This counter recalculates both as you revise, placing sentences first and then showing words, paragraphs, characters, and average words per sentence rounded to one decimal place. Use the figures to investigate dense passages or abrupt runs of short statements, not as a rule that every sentence must match one target. The tool runs wholly in your browser, remains free forever, and supports unlimited checks without storing or transmitting your prose.
Common questions
More tools
Looking for another tool?
See all free tools
Want this in every app?
Get the desktop app
Writing every day?
See writing
Write better with AI
Enhance any text you select in any app on desktop, in browsers, in your editor or terminals.
Download PromptDC