English Proficiency Level Estimator (CEFR)
Estimate your CEFR English proficiency level (A1 through C2) by entering your self-assessed scores across five key language competency dimensions. Each dimension is scored 1–10.
1 = very basic (<500 words known), 10 = near-native (>10,000 words)
1 = very frequent basic errors, 10 = consistently accurate with complex structures
1 = simple words/phrases only, 10 = understands all text types including implicit meaning
1 = very slow/clear speech only, 10 = understands any native speaker at natural speed
1 = isolated words/phrases, 10 = spontaneous, precise, nuanced expression
Your estimated CEFR level will appear here.
Formula
Composite Score = (Vocabulary × 0.25) + (Grammar × 0.20) + (Reading × 0.20) + (Listening × 0.20) + (Fluency × 0.15)
All inputs are on a 1–10 integer scale. The composite score (also 1–10) is then mapped to a CEFR band:
| Composite Score | CEFR Level | Name |
|---|---|---|
| 1.00 – 2.49 | A1 | Breakthrough |
| 2.50 – 3.99 | A2 | Waystage |
| 4.00 – 5.49 | B1 | Threshold |
| 5.50 – 6.99 | B2 | Vantage |
| 7.00 – 8.49 | C1 | Effective Operational Proficiency |
| 8.50 – 10.00 | C2 | Mastery |
Assumptions & References
- The six CEFR levels (A1–C2) are defined by the Council of Europe's Common European Framework of Reference for Languages (CEFR, 2001; updated 2018).
- Vocabulary weights reflect research showing lexical knowledge is the single strongest predictor of overall L2 proficiency (Nation, 2001; Learning Vocabulary in Another Language).
- Grammar, Reading, Listening, and Fluency weights are derived from the CEFR's five communicative language competence strands and the relative emphasis given in standardised tests (Cambridge English, IELTS, TOEFL iBT).
- The 1–10 scale is a linear mapping of CEFR descriptors: A1 ≈ 1–2, A2 ≈ 3, B1 ≈ 4–5, B2 ≈ 6, C1 ≈ 7–8, C2 ≈ 9–10, consistent with the DIALANG project's proficiency scale calibration.
- Vocabulary size benchmarks: A1 ≈ 500 words, A2 ≈ 1,000, B1 ≈ 2,000, B2 ≈ 4,000, C1 ≈ 8,000, C2 ≈ 16,000+ (Milton & Alexiou, 2009; Vocabulary size and the Common European Framework of Reference).
- This tool provides a self-assessment estimate only. Official CEFR certification requires a validated examination (e.g., Cambridge B2 First, IELTS, TOEFL, DELF/DALF).
- Reference: Council of Europe (2020). Common European Framework of Reference for Languages: Learning, Teaching, Assessment – Companion Volume. Strasbourg: Council of Europe Publishing.