How Your IELTS Band Score Is Calculated

The Big Picture: Four Modules, One Overall Score

Your IELTS Overall Band Score is built from four separate module scores: Listening, Reading, Writing and Speaking. Each module is scored on the same 9-band scale, in increments of 0.5 (so you'll see scores like 6.0, 6.5, 7.0, but never 6.3 or 6.7).

The catch is that each module gets there in a completely different way. Listening and Reading are scored from a fixed number of correct answers converted through a table. Writing and Speaking are judged by trained examiners against detailed criteria. Understanding these two different paths helps you see why a 'good guess' at your overall score often goes wrong.

Listening and Reading: From Raw Marks to a Band

Both Listening and Reading have 40 questions, so your raw score is simply the number of correct answers out of 40. That raw score is then converted into a band score using a conversion table.

Here's the part many candidates don't realise: the exact conversion table is not identical for every single test. IELTS uses a process called equating, where each new test version is calibrated so that a candidate of a given true ability gets roughly the same band regardless of which version they sat. This keeps results fair even though some listening recordings or reading passages are slightly harder or easier than others. Practically, this means the raw mark needed for a particular band can shift by a point or two between administrations.

That said, typical patterns are fairly stable and useful as a planning guide:

Academic and General Training Listening use the same conversion approach, but Reading conversion tables differ between the two test types—General Training Reading is generally a little more forgiving at the lower and middle bands, because its texts are considered less linguistically demanding than Academic passages.

The practical lesson: in Listening and Reading, every single correct answer matters, especially in the middle of the raw-score range where a couple of extra correct answers can push you up a full half or whole band. There's no partial credit and no examiner judgement involved—it's a direct conversion.

• Roughly 39–40/40 correct is needed for Band 9
• The high 30s (around 35–38) typically sit in the Band 8 to 8.5 range
• Missing 8–10 questions often still keeps you around Band 7
• Bands 5–6 usually correspond to getting roughly half to two-thirds of the 40 questions correct
• These ranges shift slightly test to test due to equating, so treat them as a guide, not a guarantee

Writing: Four Criteria, and Task 2 Counts More

Writing has no raw score at all. Two trained examiners' worth of judgement (in practice, one examiner marking against a detailed rubric) is applied to each task using four equally weighted criteria: Task Achievement or Task Response (how fully and accurately you address the question), Coherence and Cohesion (organisation and logical flow), Lexical Resource (vocabulary range and accuracy), and Grammatical Range and Accuracy.

For each task, the examiner awards a band for each of these four criteria, then those four scores are averaged to produce a band for that task. Task 1 and Task 2 are marked separately, but they don't count equally towards your Writing band: Task 2 is weighted twice as heavily as Task 1. This reflects the fact that Task 2 requires more sustained argument and is generally treated as the more demanding piece of writing.

In practice, this means a strong Task 2 essay can meaningfully offset a weaker Task 1 report or letter, but the reverse is much harder—an excellent Task 1 cannot fully rescue a poor Task 2. If you only have time to polish one task while practising, Task 2 deserves the larger share of your attention.

Speaking: Four Criteria Across One Conversation

Speaking is assessed live (or via recording) across the three parts of the test as a single, connected performance rather than task by task. The examiner scores you on four criteria: Fluency and Coherence, Lexical Resource, Grammatical Range and Accuracy, and Pronunciation.

Each criterion is judged holistically across everything you said in Parts 1, 2 and 3—so a strong Part 2 long turn doesn't get scored separately from a weaker Part 3 discussion; the examiner is forming an overall impression of your performance on each criterion across the whole test. The four criterion scores are then averaged to produce your Speaking band, rounded to the nearest half band using the same logic described below.

Because pronunciation and fluency are judged continuously rather than in isolated moments, a single slip (a mispronounced word, a brief hesitation) rarely has much impact. What matters more is your ability to sustain accurate, well-organised, naturally-paced speech across the full 11–14 minutes.

The Overall Band Score Rounding Rule

Your Overall Band Score is the arithmetic mean of your four module bands (Listening, Reading, Writing, Speaking), each already rounded to the nearest half band. This average is then rounded again, but not with ordinary rounding rules—IELTS always rounds up at the halfway points.

Because each module score is a multiple of 0.5, the average of four such scores can only land on certain decimal points: whole numbers, .125, .25, .375, .5, .625, .75, or .875. Anything closer to a half-band value rounds to it as normal. But at the two exact midpoints, .25 and .75, IELTS rounds up rather than down.

Example 1: You score 6.0, 6.0, 6.0 and 7.0 across the four modules. The average is 6.25 exactly—a midpoint—so it rounds up to 6.5, not down to 6.0.

Example 2: You score 7.0, 7.0, 7.0 and 6.0. The average is 6.75 exactly, which rounds up to 7.0, not down to 6.5.

This rounding-up-at-midpoints rule is one of the few genuinely 'generous' quirks in IELTS scoring, and it's worth knowing so you don't underestimate what a mixed set of module scores can add up to.

What This Means for Your Study Strategy

Because Listening and Reading are pure raw-score conversions, targeted question-type practice translates fairly directly into band improvement—there's no examiner subjectivity to work around, just accuracy under time pressure.

Writing and Speaking are different: since each is an average of four independent criteria, a single very weak criterion (say, narrow vocabulary) will drag down your module band even if your other three criteria are strong, because examiners can't 'average away' a genuinely low-scoring area the way raw-score conversions might smooth out one missed question.

If you're chasing a specific overall band, it's worth mapping out realistic module targets rather than just an average. A candidate needing Overall 7.0 with a weak Speaking score, for instance, needs to know whether their Listening and Reading can realistically compensate—and by how much—given the rounding rule above.

You can practise all four skills and get AI-estimated band scores for free on Bandleep to see where your module-level strengths and weaknesses actually sit before test day. Just remember: these are practice estimates to guide your preparation, not official IELTS results.