Sentence Counter
Count sentences and see average sentence length.
- Free
- Real-time
- Runs locally
Sentences
0
Average length
–
words per sentence
Longest
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Long sentences
0
Over 25 words
Sentence types
Sentence length
Sentences
0 shownSort
Sentences appear here as you type.
Paste any text to count its sentences instantly. Beyond the total, you see the average and median sentence length, the longest sentence, and how many sentences are questions, exclamations or statements.
Every sentence is listed with its own word count, so you can sort by length and spot the long sentences that make writing hard to follow. Set your own limit for what counts as long, then copy or download the sentences one per line. Your text is processed in your browser only.
How to count sentences
- STEP 01
Paste your text
Paste or type an essay, article, email or any text. The count updates as you type.
- STEP 02
Check the statistics
Read the sentence count, average length, sentence types and the length distribution.
- STEP 03
Review long sentences
Sort the list by length or show only sentences over your limit, then edit them in your text.
Features
Accurate sentence detection
Handles abbreviations like Mr. and e.g., decimal numbers, initials, quotes, and runs such as “?!” or “...”.
Average and median length
See the typical sentence length in words, plus the longest sentence and where it is.
Sentence types
Counts statements, questions, exclamations and lines that have no end punctuation.
Long sentence finder
Flag sentences over any word limit and list only those to make them easier to fix.
Every sentence listed
Each sentence with its number and word count, sortable by position or length.
Export one per line
Copy or download the sentences as plain text, one sentence per line.
How sentences are counted
A sentence ends with a period, question mark, exclamation mark or ellipsis followed by a space or line break, or with the full-width 。！？ used in Chinese and Japanese. Numbers like 3.14, web addresses and common abbreviations such as Mr., Dr. and e.g. do not end a sentence.
Text separated by a blank line, such as a heading, counts as its own sentence even without a final period. The rules are the same as in our Word Counter, so both tools always agree.
What is a good sentence length?
Plain-language guides often suggest an average of about 15–20 words per sentence, with a mix of short and longer sentences. Sentences over 25–30 words are harder to follow, so they are worth a second look. These are guidelines, not rules: the right length depends on your audience and purpose.
Frequently asked questions
Why is my sentence count different from another tool?
Sentence detection is a heuristic, and tools treat abbreviations, headings and lists differently. This counter ignores common abbreviations, decimals and URLs, and counts a line without end punctuation as a sentence when it is separated by a blank line.
Are headings and bullet points counted?
A heading or list item on its own paragraph counts as one sentence. Lines that follow each other without a blank line between them belong to the same sentence unless one ends with punctuation.
How is average sentence length calculated?
It is the total number of words divided by the number of sentences. The median shows the middle sentence length, which is less affected by a few very long sentences.
What counts as a long sentence?
By default, any sentence over 25 words is flagged. Change the limit under Sentence length to match your style guide.
Does it work for other languages?
Yes for languages that end sentences with . ! ? or …, including Spanish ¿? and ¡!, and for Chinese and Japanese full-width punctuation. Abbreviation handling is tuned for English.
Is my text uploaded?
No. Sentences are counted in your browser, and long texts are processed in a local background thread.