How to Use the English Word CEFR Classifier
The English Word CEFR Classifier breaks down the words in a piece of English text into the six CEFR (Common European Framework of Reference) levels, from A1 through C2, and calculates an overall average difficulty for the passage. It's useful for checking whether a reading passage matches your current level, or whether something you've written is too advanced for your target audience.
Classification runs against a built-in dictionary of representative words for each level — A1 covers everyday basics, while C2 includes academic and specialized vocabulary. Type or paste in text and you'll see a bar breakdown of how many words fall into each level along with a single average difficulty rating. Words not found in the dictionary are marked unclassified and excluded from the average.
Keep in mind this tool uses a curated list of common words rather than the full official CEFR vocabulary database, so treat the result as a helpful estimate rather than an exam-grade assessment.
Frequently Asked Questions
Classification uses a built-in dictionary of representative words for each level. It does not cover the full official CEFR vocabulary list — it's an approximation based on common words for each band.
Unrecognized words are counted separately as "unclassified" and are excluded from the average difficulty calculation.