How are sentences detected?

Sentences are counted by terminal punctuation — periods, exclamation marks, question marks and ellipses — followed by whitespace or the end of the text.

Will abbreviations affect the count?

Abbreviations like Dr. or e.g. can occasionally be counted as sentence breaks, so treat the figure as a close estimate.

No. The analysis runs entirely in your browser and your text is never sent anywhere.

What is a good average sentence length?

Most readability guides suggest aiming for an average of 15 to 20 words per sentence for general audiences. Mixing short and long sentences keeps writing varied while a low average improves clarity.

Does it count words as well as sentences?

Yes. It reports the total word count alongside the sentence count and uses both to compute the average words per sentence.

Why might the sentence count be slightly off?

Because sentences are found by terminal punctuation, decimals like 3.14 or abbreviations like e.g. can be misread as sentence breaks. The count is a close estimate rather than a perfect parse.

Sentence Counter — Gera Tools

Sentence counter

Count the sentences and words in any text and see the average words per sentence — a quick readability signal. It is useful for writers, students and editors trimming long-winded prose, since shorter average sentences usually read more easily.

How it works

Sentences are detected by terminal punctuation — a period, exclamation mark, question mark or ellipsis — that ends a run of text. Each such run with at least one non-space character counts as one sentence. Words are counted as runs of non-whitespace characters, and the average is words divided by sentences, rounded to one decimal place.

average words per sentence = total words ÷ total sentences

Example

Take the text: “Hello there. How are you today? I am well!”

Metric	Value
Sentences	3
Words	8
Average words per sentence	2.7

Because detection relies on punctuation, abbreviations like Dr. or e.g. can occasionally be miscounted, so treat the result as a close estimate. Paste your text and the figures update instantly — everything is processed locally in your browser with no uploads.