Estimate the number of sentences in a block of text.
The counter looks for common sentence-ending punctuation such as periods, question marks, and exclamation marks. Abbreviations and unusual punctuation can make automated counts imperfect.
Sentence counting is an estimate based on sentence-ending punctuation and common writing patterns. It is most reliable for ordinary prose and can be less predictable with abbreviations, decimal numbers, headings, or unusual punctuation.
A paragraph containing three complete statements separated by periods will normally be counted as three sentences. A decimal such as 3.14 should not be treated as the end of a sentence simply because it contains a period.
Natural language contains abbreviations, quotations, lists, headings, and punctuation styles that make perfect sentence detection difficult without deeper language analysis. Use the result as a practical writing metric rather than a formal linguistic annotation.
Sentence count can help teachers, editors, and writers compare paragraph length, estimate reading structure, or check whether a draft is overly dense. Combine it with word count and reading time for a broader view of a document.