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Sentence Length Analyzer
Used by developers, writers, and creators worldwide.
A sentence length analyzer breaks your text into sentences and measures each one, so you can see and fix the rhythm of your writing. Paste any text and it reports the number of sentences, the average length, the shortest and longest, and flags every sentence over thirty words as a candidate to split. Good writing varies its sentence length — a run of long, breathless sentences tires readers, while all-short sentences feel choppy. Writers use this to smooth their pacing, editors to catch sprawling sentences, and students to meet clarity standards. Seeing the numbers turns a vague sense that something reads heavily into a fixable list. Use the report to break up the long sentences it flags, then read the result aloud: varied, mostly-short sentences with the occasional longer one are what make prose feel effortless to read.
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How to use
- Choose your options above
- Click Generate
- Copy your result
Detailed instructions
- Paste or type your text.
- Click Generate to see the sentence-length report.
- Split any long sentences the tool flags.
- Read the result aloud to check the rhythm.
Use Cases
- •Smoothing the pacing and rhythm of a draft
- •Catching sprawling sentences that should be split
- •Meeting a clarity standard on an essay or report
- •Checking that sentence length varies naturally
- •Diagnosing why a passage feels heavy to read
Tips
- →Aim to vary length rather than hit one target.
- →Break flagged long sentences at a natural conjunction.
- →Follow a long sentence with a short one for contrast.
- →Read aloud — if you run out of breath, split the sentence.
FAQ
how long is too long for a sentence
There is no hard limit, but sentences over about 30 words often try to carry too much and lose the reader, so the tool flags them. The goal is variety — mostly shorter sentences with an occasional longer one for flow.
is my text sent anywhere
No. The analysis runs entirely in your browser, so nothing you paste is uploaded or stored. You can safely check confidential or unpublished text.
why does sentence variety matter
A run of long sentences feels breathless and dense, while all-short sentences read choppy. Varying length creates rhythm that keeps readers engaged, which is why seeing your shortest, longest, and average together is useful.