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Sentence Complexity Analyzer
Used by developers, writers, and creators worldwide.
A sentence complexity analyzer rates how complex your writing is, based on sentence length and the proportion of longer words. Complexity is not the same as quality — sometimes you want dense, sophisticated prose, and sometimes you want it short and punchy — but knowing where your writing sits helps you match it to your audience. This tool measures average sentence length and the share of long words, then gives your text a simple, moderate, or complex rating. Paste your writing and see where it lands. It is ideal for editing, matching tone to an audience, and simplifying dense prose. If your goal is clarity, watch for long average sentence length, which is usually the biggest driver of complexity — breaking one long sentence into two is the fastest fix.
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How to use
- Choose your options above
- Click Generate
- Copy your result
Detailed instructions
- Paste your text into the box.
- Click Generate to analyse complexity.
- Check the rating and stats.
- Shorten long sentences to simplify.
Use Cases
- •Editing for your audience
- •Checking if writing is too dense
- •Simplifying technical prose
- •Matching tone to a reader
- •A quick style gut-check
Tips
- →Watch your average sentence length.
- →Match complexity to your audience.
- →Break one long sentence into two.
- →Read it aloud to feel the rhythm.
FAQ
what makes writing complex
Mainly long sentences and a high proportion of long, multi-syllable words. Complex writing packs more clauses and harder vocabulary into each sentence, which can suit sophisticated audiences but makes text slower and harder to read for a general one.
is complex writing bad
Not inherently — it depends on your audience and purpose. Academic or literary writing is often deliberately complex, while web copy and instructions should be simple. The goal is to match your complexity to the reader, not to always minimise it.
how do i simplify my writing
Shorten your sentences first — long average sentence length is usually the biggest driver of complexity. Break long sentences into two, cut unnecessary clauses, and swap a few long words for plain ones. Those changes make dense prose far more readable.