Sentence Counter
Count the sentences in any text and see how long they run. Sentence length is the single biggest lever on readability — the average sentence in clear writing sits around 14 to 20 words, and anything past 25 is where readers start losing the thread. This shows your average, your longest, and how many sentences cross that line.
- Sentences
- 0
- Average words
- 0
- Longest sentence
- 0 words
- Shortest sentence
- 0 words
Nothing is uploaded — this tool runs inside your browser, so your files never leave your device.
Why use this tool
- Counts sentences, including ones ending in ! or ?
- Shows average, longest and shortest sentence length in words
- Flags how many sentences run past 25 words
- Gives a rough readability read from average sentence length
How it works
- 1Paste your writing into the box above.
- 2Check the average — 14 to 20 words per sentence reads comfortably.
- 3Break up whatever the 'over 25 words' count is picking up.
Sentence Counter — frequently asked questions
A full stop, question mark or exclamation mark followed by a space, or a line break. Abbreviations like 'e.g.' can occasionally be counted as a sentence end, so treat the number as very close rather than exact.
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