IELTS Band Score Calculator: How Your Overall Band Rounds

Most IELTS band score calculators online are a form with four boxes and a button. You type your bands, it gives you a number, and you learn nothing about why.

The one below shows its working: the total, the average, and which rounding rule gave you your band. But you do not really need it. The rule is short enough to do in your head, and once you understand it you will also understand why some candidates miss a 7 by what looks like nothing. I mark Listening and Reading scripts, and the rounding question is the one I get asked most, so here it is properly.

The IELTS band score calculation rule

IELTS publishes the rule on ielts.org, and it is two sentences long.

Your overall band is the average of your four module bands, rounded to the nearest half band. If the average ends in .25, it rounds up to the next half band. If it ends in .75, it rounds up to the next whole band.

IELTS gives its own example: 6.5 in one module, 6.5 in another, 5.0 and 7.0. Those add up to 25, divide by four and you get 6.25. That rounds up to an overall 6.5.

That is the whole calculator. Add, divide by four, round.

If you want the box on its own, without the explanation around it, it lives at the band score calculator — the same arithmetic, plus the raw-score anchors for Listening and both Readings, and a link you can copy once your four bands are in it.

The rounding cases most calculators skip

Here is the part that trips people up. Because every module band is a whole or half number, the average of four of them can only end in one of eight ways. Most explanations mention .25 and .75 and stop there, which leaves you guessing about the other six.

"Nearest half band" settles all of them. .25 and .75 are the two exact ties, and IELTS breaks both upwards. Everything else just goes to whichever half band is closer.

The two bold rows are where people are most often surprised. A 6.125 average is not rounded up to 6.5; it is closer to 6.0, so that is what you get. A 6.625 does not become 7.0; it becomes 6.5.

We run this exact rule on our own mock tests, and before publishing this table I checked each row against that code.

Worked examples

Numbers make this easier to trust.

6.0, 6.0, 6.0, 6.5. Total 24.5, average 6.125. Overall 6.0. The half band in one module was not enough to move you.

6.0, 6.0, 6.5, 6.5. Total 25, average 6.25. Overall 6.5. Two modules at 6.5 are enough.

6.5, 6.5, 6.5, 7.0. Total 26.5, average 6.625. Overall 6.5. This is the one that stings: three 6.5s and a 7, and the overall is still 6.5.

6.5, 6.5, 7.0, 7.0. Total 27, average 6.75. Overall 7.0. Two 7s and two 6.5s make the 7.

That third example is worth sitting with. If you need an overall 7 and you are at 6.5 across the board, one good module will not carry you. You need two.

How much a weak module costs you

Because the overall is an average, one low module pulls everything down by a quarter of its shortfall.

Say Listening, Reading and Speaking are all 7.0 and Writing is 5.5. The total is 26.5, the average 6.625, and the overall is 6.5. Writing on its own cost you the 7.

Raise Writing to 6.0 and the average becomes 6.75: an overall 7.0. You would get the same result by pushing Listening from 7.0 to 8.0 (6.875 rounds to 7.0), but half a band where you are weakest is usually far easier to find than a whole band where you are already strong.

This is why I tell candidates to find their lowest module before anything else. It is almost always the cheapest place to win back an overall band.

Listening and Reading: from correct answers to a band

Listening and Reading are marked out of 40, one mark per question. Your number of correct answers is then converted to a band.

IELTS publishes a handful of reference points for this, which it calls indicative:

General Training Reading also lists 15 correct answers at band 4.

Two things about this table matter.

First, IELTS says plainly that "the precise number of marks needed to achieve these band scores will vary slightly from test version to test version." So 30 correct answers in Listening is roughly band 7, not a promise of it.

Second, those are all the reference points IELTS publishes. If a website shows you a complete forty-row conversion table, the rows in between were filled in by someone, not by IELTS. They may be sensible guesses, but they are guesses.

Notice too how differently the two Reading papers are scaled. Thirty correct answers is band 7 on Academic Reading and only band 6 on General Training. The General Training texts are more everyday, and the scale is set higher to balance that. If you are unsure which one you should be sitting, this comparison covers it.

Writing and Speaking bands

Writing and Speaking are not marked by counting answers. An examiner scores each one against four criteria, and the criteria carry equal weight.

For Writing, the criteria are task achievement (Task 1) or task response (Task 2), coherence and cohesion, lexical resource, and grammatical range and accuracy. IELTS states that Task 2 contributes twice as much as Task 1 to your Writing band. A strong Task 1 cannot rescue a weak Task 2.

For Speaking, the criteria are fluency and coherence, lexical resource, grammatical range and accuracy, and pronunciation. The four are averaged into your Speaking band.

If your Writing is stuck at 6, this breakdown of band 6 against band 7 goes through the criteria one at a time.

Check the module minimums, not just the overall

One last thing, because it catches people after they have already celebrated.

Many universities and visa routes ask for an overall band and a minimum in every module, something like "7.0 overall with no band below 6.5". An overall 7.0 made of 8.0, 7.5, 7.0 and 6.0 meets the first half and fails the second.

Read the requirement on the organisation's own page before you decide you have the score you need.

Try it on a real paper

The rule is simple. Knowing where your own four bands sit is harder, and you only find out by sitting all four under real timing. Our mock tests apply the rounding above automatically and show your raw scores next to your bands, so you can see exactly which module is holding the overall down.