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Text Complexity Analyzer

Measure the average syllables per word and how many long words your text uses — a quick proxy for how dense the writing is.

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How to use it

  1. Type or paste your text into the box above.
  2. The result appears as you type — or press Convert.
  3. Press Copy result to put it on your clipboard.

Example

Input
Extraordinarily complicated vocabulary occasionally obscures straightforward communication.
Result
Avg syllables/word: 4.43
Complex words (3+ syllables): 7 (100.0%)
Total syllables: 31

Questions

What counts as a complex word?

Three syllables or more, which is the usual threshold in readability work.

Is my text sent to a server?

No. This tool runs entirely in your browser — nothing you type or paste is uploaded, logged or stored anywhere.

Is there a limit on how much text I can use?

There is no fixed limit. Very large documents depend on your device’s memory, but ordinary pages and files are handled instantly.