How Your Overall IELTS Band Is Calculated From the Four Papers

You sit four papers and receive five numbers: one for Listening, Reading, Writing and Speaking, and one overall. The fifth number is not a separate judgement. It is arithmetic performed on the other four, and the rounding step inside it decides more results than candidates expect.

This page shows the calculation, the rounding rule with worked examples, and the point that matters in practice: which paper is worth your remaining study time.

The calculation in one line

Add the four band scores. Divide by four. Round the result to the nearest whole or half band.

Each paper is reported in whole and half bands, from 0 to 9. Nothing is weighted. Listening counts exactly as much as Writing, and a strong Speaking score cannot be made to count double.

The rounding rule

This is the step that surprises people. Because four scores are being averaged, the mean can land on a quarter or an eighth of a band, and IELTS resolves those cases with a published rule:

1. An average ending in .25 is rounded up to the next half band.
2. An average ending in .75 is rounded up to the next whole band.
3. Anything else is rounded to whichever whole or half band is nearest.

So 6.25 becomes 6.5, and 6.75 becomes 7.0. An average of 6.125 is nearer to 6.0 than to 6.5, so it becomes 6.0. An average of 6.375 is nearer to 6.5, so it becomes 6.5.

Worked examples

Look at the first two rows. Three of the four scores are identical. A single half band in Speaking moves the overall result from 6.0 to 6.5, because it carries the average across the rounding boundary. That is how one half band in one paper becomes a whole half band overall.

Why the overall band is not the whole story

Many universities and immigration authorities set two requirements: an overall band, and a minimum in each paper. A candidate with 7.0 overall and 6.0 in Writing can be refused by a programme asking for 6.5 in every component, even though the headline number is higher than the requirement.

Check the exact wording of your requirement before you decide what to retake. If your target is "6.5 overall with no band below 6.0", then a 5.5 in Writing is the only thing standing between you and the result, regardless of how strong the average looks.

Which paper to work on

Run the arithmetic backwards. Take your last practice scores, average them, and then test what one extra half band in each paper would do.

For many candidates the writing paper is the lowest of the four, and it is also the one where a half band tends to be the difference between an overall band and the one above it. Listening and Reading move in small steps as your vocabulary grows. Writing moves when a specific habit changes, which means it can move faster than the other three once you know which habit to change.

How the writing paper reaches its own number

The writing band is itself an average, and knowing its shape tells you where the gains are.

1. Task 1 and Task 2 are marked separately.
2. Each task is marked on four criteria: Task Response or Task Achievement, Coherence and Cohesion, Lexical Resource, and Grammatical Range and Accuracy. The four criteria carry equal weight within a task.
3. Task 2 counts for twice as much as Task 1 in the paper's final band.

That third point is the one to act on. An hour spent on Task 2 is worth two hours spent on Task 1, and a candidate who runs out of time on Task 2 because Task 1 took 35 minutes has damaged the more valuable half of the paper. Write Task 2 first if timing is your weakness.

Two other pages here go further into this arithmetic: how the writing band score is calculated works through the two task scores in detail, and the IELTS band score table shows what each band level means across the criteria.

A worked case

Suppose your practice scores are Listening 6.5, Reading 6.0, Writing 5.5, Speaking 6.5. The average is 6.125, which rounds to 6.0.

Now test the half bands one at a time. Reading at 6.5 gives an average of 6.25, which rounds up to 6.5. Writing at 6.0 gives 6.25 as well, so also 6.5. Either one gets you there.

The question is which is cheaper to earn. If your Reading loss comes from running out of time on the last passage, that is a technique fix and probably the faster route. If your Writing loss comes from one repeated grammar error, that is also fast. If your Writing loss is a missing overview in Task 1 and no clear position in Task 2, that is structural, and structural fixes tend to move a band more reliably than vocabulary does.

What to do today

1. Write down your four most recent scores and calculate the average yourself.
2. Apply the rounding rule and see how far you are from the next boundary.
3. Add a half band to each paper in turn and note which ones cross the line.
4. For the papers that cross, ask what specifically costs you the marks.

That last question is where most candidates stop, because the answer is hard to reach alone. For the writing paper you can paste an essay into Bandly and get an estimated band for each of the four criteria along with the sentences behind it, which turns "my writing is weak" into something you can act on. The result is an estimate produced by a language model rather than a mark from a qualified examiner, so use it to find the habit, not to predict your certificate.