CEFR to IELTS Band Mapping Explained
CEFR · Bands · May 2026
Updated
CEFR describes what you can do in real life; IELTS bands describe performance on one high-stakes test. Rough alignments: A2 about 3-4, B1 about 4-5, B2 about 5.5-6.5, C1 about 7-8, C2 about 8.5-9. Classroom B2 does not guarantee IELTS 6.0, exam tasks, timing, and stress compress scores. Use CEFR for course placement; use IELTS bands for visa and university cut-offs.
Band9AI is run by BAND9AI HUMAN SYSTEMS INC., a company registered in Canada. Trust & verification
Written by Mustafa Darras, AI Systems Architect. meet the founder.
Common alignments (approximate)
Why mappings break down
| Bands | Mean | Reported |
|---|---|---|
| Coursebook B2 | Untimed class tasks overestimate exam band | |
| Strong speaking, weak writing | Four skills diverge | |
| Old IELTS score | CEFR profile may have shifted | |
| AI chat fluency | Inflated self-rating without timing |
Use both frameworks
Timed mock
Place yourself with a full four-skill mock, not classroom level alone.
Visa rules
Check cut-offs in IELTS bands, not CEFR letters on forms.
B2 feedback
See AI feedback for B2 speakers for delivery differences.
Practice fix
Match your mock band to CEFR only after timed four-skill results.
Key takeaways: CEFR to IELTS Band Mapping Explained
- Overall = mean of four skills, then round.
- No skill is weighted more than another.
- Minimum per-skill rules trump a strong overall.
- One +0.5 skill gain moves the mean by 0.125.
CEFR to IELTS Band Mapping Explained: common questions
Official IELTS references
The criteria and score bands on this page follow the public IELTS documents below. Band9AI is independent and not affiliated with the British Council, IDP or Cambridge.
Reality Check from $15 one-time (see live pricing) · Skill Fix & Complete from $29–$49/mo
Practice drill: CEFR to IELTS Band Mapping Explained
Reading helps you understand the problem. A timed mock shows how it affects your band, one IELTS criterion at a time.
Free 2-min band diagnostic →| Tool | Timed four-skill mock | Score for each criterion | Action |
|---|---|---|---|
| ChatGPT / Copilot / Gemini | No | Chat only | N/A |
| Free IELTS practice sites | Partial / untimed | Limited or none | N/A |
| Band9AI | Yes: Listening, Reading, Writing, and Speaking | Yes, based on the public IELTS band descriptors | $15 Reality Check → |
What you get from a Band9AI mock
- A band for each criterion, such as Task Response, Coherence and Cohesion, Lexical Resource and Grammar in Writing
- The one mistake pattern holding your score back, not generic advice to keep practising
- Timed practice for one skill at a time, from your dashboard after checkout
Match your mock band to CEFR only after timed four-skill results.
Get IELTS Reality Check →