IELTS and CEFR measure the same thing — English language ability — using different scales. IELTS uses a 1–9 band score; CEFR uses six levels from A1 to C2. This article provides the definitive conversion table, explains the logic behind the mapping, and tells you when each scale is more useful.
The Definitive IELTS to CEFR Conversion Table
| CEFR Level | CEFR Label | IELTS Overall Band | What it means |
|---|---|---|---|
| C2 | Mastery | 8.5 – 9.0 | Near-native proficiency. Expert command of complex language. |
| C1 | Advanced | 7.0 – 8.0 | Flexible professional and academic use. Clear structured writing. |
| B2 | Upper Intermediate | 5.5 – 6.5 | Professional fluency in familiar domains. Follows complex text. |
| B1 | Intermediate | 4.0 – 5.0 | Manages in most travel and everyday situations. |
| A2 | Elementary | 3.0 – 3.5 | Basic communication on very familiar topics. |
| A1 | Beginner | Below 3.0 | Very basic phrases only. |
Key Conversion Points You Need to Know
IELTS 6.0 = CEFR B2
The most common visa and undergraduate admission target. At B2 you have working proficiency — you can hold professional conversations, follow mainstream media, and write clear reports on familiar topics.
IELTS 6.5 = CEFR B2/C1 Boundary
This is where classification gets blurry. Most official conversion tables place 6.5 at upper B2. Some institutions accept it as meeting C1 requirements for entry purposes. The Cambridge English Scale places it at the top of B2.
IELTS 7.0 = CEFR C1
The most significant threshold for postgraduate study and professional registration. At C1 you can handle academic discourse, produce coherent well-structured writing, and interact fluently with native speakers without strain.
IELTS 8.0 = CEFR C1/C2 Boundary
High C1 approaching C2. Required for research-level academic work and roles requiring exceptional command of academic or literary language.
Why IELTS Bands and CEFR Levels Don't Map Perfectly
The conversion is approximate because IELTS and CEFR measure somewhat different things. IELTS is designed as a high-stakes certified exam with specific test content and scoring rubrics. CEFR is a description framework — it defines ability levels without specifying any particular test.
Additionally, IELTS gives fractional scores (5.5, 6.0, 6.5) while CEFR has only six discrete levels. The CEFR range for B2 covers a large span of IELTS scores (5.5 to 6.5), which means a person at the bottom of B2 and a person at the top can have very different IELTS scores.
When to Use IELTS vs CEFR
Use IELTS when: an institution or government office specifically requires an IELTS certificate. IELTS is the required test for UK, Australian, Canadian, and New Zealand immigration in most cases. Many universities also require it explicitly.
Use CEFR when: you want to understand your actual ability level, communicate your proficiency to a European employer, get a free instant assessment, or check your readiness before paying for IELTS.
The smart strategy: get your CEFR level free on LingoLevel first, then take the IELTS only when you are confident your level meets the requirement. A CEFR B2 result means you are ready for IELTS 6.0–6.5. A CEFR C1 result means you are likely to achieve 7.0+.
Or skip straight to the IELTS estimate: try our free AI IELTS Band Predictor for a predicted band score in 10–30 minutes.
See also: IELTS Band Scores Explained and CEFR A1–C2 Reference Guide.