Sentence Length Checker — Paste any text and see the word count of every sentence, the average and median sentence length, and a distribution chart that shows how your sentences stack up against the recommended 15–20 word range.
Analysis happens in your browser.
Was Sentence Length Checker useful?
Sentence Length Checker是什么？
Paste any text and see the word count of every sentence, the average and median sentence length, and a distribution chart that shows how your sentences stack up against the recommended 15–20 word range.
Sentences over 35 words are flagged for easy editing. The most common readability advice is "vary your sentence length," and this tool shows you whether you are doing that or not.
使用方法
-
Paste your text
Drop in an article, essay, email, or any block of prose you want to check.
-
Read the headline numbers
Total sentences, average, median, and longest. If the average is over 25 words, your prose is dense; under 14, it may feel choppy.
-
Fix any sentence over 35 words
The tool flags run-on candidates. Each one is shown in full so you can split it without losing context.
常见问题
相关指南
How to Measure the Reading Level of Your Writing (and What the Scores Mean)
A practical guide to the six most common readability formulas: Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, SMOG, Coleman-Liau, and ARI. The differences, the math, the right one for the right audience, and how to run all six in your browser without uploading your draft anywhere.
How to Count Words, Sentences, and Paragraphs (and Why Each Matters)
Three different counts, three different purposes. The formulas, the edge cases that trip people up, and the free tools that do it without uploading your text.
相关工具
Sentence & Paragraph Counter
Count sentences, paragraphs, words, characters, and reading time all at once. Find your longest word and average sentence length.
字数统计器
统计任何文本中的单词、字符、句子和段落数量。免费、在浏览器中运行,无需上传。
Reading Time Calculator
Estimate how long it takes to read or speak a piece of text. Adjustable words-per-minute for fiction, non-fiction, or speech.
Character Counter
Count characters, words, lines, and UTF-8 bytes as you type.
Last reviewed: 2026-09-25