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Experiments

Vocabulary Size Estimator

A short guided estimate for learners who want a quick sense of their current vocabulary range.

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Use this tool

Enter your input and review the result below.

Frequency-band sampling

Vocabulary size estimator

Answer a checklist of ~40 words sampled across five frequency bands to get a statistically grounded estimate of your vocabulary range.

You will see words grouped by difficulty level. Mark the ones you recognise — there is no penalty for skipping. The test takes about 3 minutes.

Result

Vocabulary snapshot

Pick a language and start the test to see your estimated vocabulary range, CEFR level, and per-band breakdown.