IELTS or Cambridge: which English certificate should you take?

Two tests, two ideas

IELTS and the Cambridge English Qualifications come from the same family. Cambridge University Press & Assessment runs the Cambridge exams on its own, and it also owns IELTS together with the British Council and IDP.

Yet the two answer different questions. IELTS asks “how good is your English today?” and places you somewhere on one scale, whatever your level. A Cambridge exam asks “have you reached this level?” and certifies it. That single difference shapes everything else: how you prepare, what happens if you have a bad day, how long the result stays useful and who will accept it.

IELTS Academic or General Training?

If you choose IELTS, the next question is which version. The Listening and Speaking tests are the same in both. Reading and Writing are different, and that is where the two versions show what they are for.

IELTS Academic is the one universities ask for. Its Reading texts come from books, journals, magazines, newspapers and online sources, written for a non-specialist reader but at the level of someone starting a degree. In Writing, the first task asks you to describe a graph, table, chart or diagram in your own words.

IELTS General Training is aimed at people who want to migrate to an English-speaking country such as Australia, Canada, New Zealand or the UK, or who want to train or study below degree level. Its Reading starts with everyday texts such as notices, advertisements and timetables, moves on to workplace texts such as job descriptions and contracts, and ends with one longer text of general interest. In Writing, the first task is a letter about an everyday situation, for example asking for information or explaining a problem.

For visas to the UK there is also a version called IELTS for UKVI, taken at centers approved by the UK Home Office. The content and scoring are the same as the standard test, with extra security. If your application is for the UK, check which version the visa you want requires before you book.

What IELTS looks like on the day

The Listening, Reading and Writing tests take 2 hours and 45 minutes together and are taken on the same day, one after the other, with no breaks in between. The Speaking test can be on the same day or within about a week of the others, depending on the test center.

Listening and Reading

Listening lasts about 30 minutes and has four parts with ten questions each, forty in all. The first two parts are set in everyday social situations, the last two in education and training. Each recording is played only once, so you write your answers while you listen. Reading takes 60 minutes for three sections and forty questions, and the texts are long: in the Academic version they add up to between 2,150 and 2,750 words.

Writing

IELTS Writing lasts 60 minutes and has two tasks. Task 1 needs at least 150 words in about 20 minutes: the description of visual information in Academic, the letter in General Training. Task 2 is an essay of at least 250 words in about 40 minutes, in which you respond to a point of view, an argument or a problem. Task 2 counts twice as much as Task 1, which is why it makes sense to give it the full forty minutes. Both answers must be written in full sentences, not notes.

Speaking

The IELTS Speaking test is a face-to-face conversation with one examiner, and it is recorded. It lasts 11 to 14 minutes in three parts. First come questions about yourself and familiar topics for four or five minutes. Then you get a card with a topic, one minute to prepare, and up to two minutes to talk on your own. Finally, the examiner asks more general and abstract questions linked to that topic, for another four or five minutes.

Paper or computer, and when results arrive

You can take IELTS on paper or on a computer at a test center, and it can also be taken online. The questions, timing and marking are the same; the main practical difference is that on paper you write your answers on an answer sheet, and on a computer you type them. Speaking is always a live conversation with an examiner.

Results come faster on a computer: usually within a few days, while paper results are available 13 days after the test. If you have a deadline, that difference alone can decide the format for you.

How IELTS is scored

Every candidate gets a band for each of the four skills and an overall band, on a scale from 0 to 9 in whole or half bands, so a result can be 6, 6.5 or 7. The overall band is the average of the four, rounded to the nearest half or whole band. Band 0 is only given to someone who did not attempt the test, which means that if you sit IELTS you always come away with a result that shows where you are.

Organizations set their own targets. Some ask only for an overall band, others for a minimum in every skill as well, and visa rules have their own requirements. Read the exact wording, because “overall 6.5” and “6.5 in each skill” are very different goals.

The IELTS partners say a result is recognized as valid for two years from the test date, and most organizations follow that window. Some accept older results and some have their own rules, so the safest move is to check with the place that will receive your result. So take IELTS close to the moment you need it.

What a Cambridge exam looks like

Cambridge exams have four papers: Reading and Use of English, Writing, Listening and Speaking. B2 First takes about three and a half hours in total, and C1 Advanced about four. Like IELTS, both can be taken on paper or on a computer, and the digital version gives faster results.

Reading and Use of English is the paper that surprises people most. Alongside reading comprehension, it tests your control of grammar and vocabulary with short tasks such as completing gaps and rewriting sentences. In B2 First it lasts 1 hour 15 minutes, with 52 questions in seven parts; in C1 Advanced it lasts 1 hour 30 minutes, with 56 questions in eight parts.

In Writing you produce two texts. The first is always an essay; for the second you choose one task from a short list of formats such as an email or letter, a report, a review or, in C1 Advanced, a proposal. B2 First asks for 140 to 190 words per text in 1 hour 20 minutes, and C1 Advanced for 220 to 260 words in 1 hour 30 minutes. The point is to show that you can adapt your style to the reader.

Listening lasts about 40 minutes in both exams, with four parts and thirty questions, and here you hear each recording twice. That is a real difference from IELTS, where you hear it once.

The Speaking test is where Cambridge is most different. You usually take it with another candidate, sometimes in a group of three, and there are two examiners: one leads the conversation, the other listens and assesses. It lasts 14 minutes per pair in B2 First and 15 in C1 Advanced, in four parts. You answer questions about yourself, speak alone about a set of photos, discuss a task with your partner and reach a decision together, and finally discuss related questions. Your ability to interact counts as well as your fluency.

How Cambridge results work

Your result is a score on the Cambridge English Scale, and that score decides which certificate you get. In B2 First, a score from 160 to 179 gives grade B or C and a certificate at B2. A score from 180 to 190 gives grade A and a certificate stating C1 level. If your score is lower, from 140 to 159, you receive a certificate at B1 instead, and scores from 122 to 139 are shown on your statement of results without a certificate.

C1 Advanced works the same way one level higher. From 180 to 199 you get a C1 certificate, with grade B or C. From 200 to 210 you get grade A and a certificate stating C2 level. From 160 to 179 you get a certificate at B2, and from 142 to 159 your score is reported without a certificate. Cambridge notes that an exam is not designed to test the full range of the level above, so if you need C2 for a specific goal, C2 Proficiency is the exam built for it.

Cambridge certificates have no expiry date. Universities and employers can still set their own rule about how recent a certificate must be, and some do, but the certificate itself stays valid. For a CV, this is the strongest argument for Cambridge: a C1 Advanced you pass this year still counts in ten years.

Side by side

How to choose

Start from the requirement, not from the test. Find the page where the organization you are applying to lists the certificates and scores it accepts. Often the decision is already made there.

Start from the requirement, not from the test.

For a visa or migration

Immigration authorities tend to be precise. They name the tests they accept, the minimum score per skill and sometimes the exact version, such as General Training or IELTS for UKVI. IELTS is on the list of many of them, and because results are usually valid for two years, it fits an application you will make soon. Follow the official list to the letter: a certificate that is not on it will not count, however good it is.

For a university

Universities in the UK, Australia, Canada and New Zealand widely accept IELTS Academic, and many also accept C1 Advanced or C2 Proficiency. Requirements are set course by course, so the same university can ask for different scores for different degrees. If both tests are accepted, think about timing: IELTS gives you a result within days on a computer, while a Cambridge certificate you already hold may save you a new test.

For employers in Europe

Across Europe, B2 First and C1 Advanced are well known to employers, schools and universities, and they carry the CEFR level, B2 or C1, in their name. A certificate that does not expire is also practical for a CV: you take the exam once, at the level you have reached, and keep it.

Knowing your level

Because everyone takes the same IELTS test, it suits you when you are not sure of your level: your band shows exactly where you are. A Cambridge exam works best when you already know your level, since each exam targets one. If you are clearly B2, B2 First is a sensible goal; if you are already working comfortably at C1, C1 Advanced is the better proof.

How to prepare

Whichever test you choose, the real work is the same: your English has to be at the level you want to prove. Exam preparation then adds the format, so that nothing on the day comes as a surprise.

Practice the parts that the format makes hard. For IELTS, that means listening while you write, since each recording is heard once; reading long texts against the clock; and writing to the word count in the time suggested, with Task 2 getting the most care. For Cambridge, give Reading and Use of English regular attention, because grammar and vocabulary are tested directly, and practice speaking with a partner, not only alone.

Give yourself time. If you are already at the level you need, a few weeks of regular practice with the format is often enough to feel at home with it. If you still have to move up a level, plan for months rather than weeks, because no amount of exam technique replaces the language itself. Book the test once you are scoring at your target in practice, not before.

Do at least one full mock test under real timing before the exam. It shows you where the minutes go, which part tires you most and how your writing holds up at the end of a long paper. Do the Speaking part out loud with another person too: answering well in your head is not the same as answering a real person while the clock runs.

Common mistakes

The most expensive mistake is taking the wrong test: the wrong version of IELTS for a visa, or a certificate the university does not list. Check the official requirement before you pay, and check it again if your plans change.

The second is taking IELTS too early. A result is usually accepted for two years, so a band earned long before you apply may have to be retaken. With Cambridge the opposite risk applies: booking an exam above your level in the hope that you will get there by the exam date, when a lower exam passed with a good grade would serve you better.

In Writing, many candidates lose marks for reasons that have nothing to do with grammar: they write under the IELTS minimum or outside the Cambridge word range, spend too long on the first task, or do not answer every part of the question. In Speaking, short answers are the classic problem in IELTS, and in Cambridge it is ignoring your partner: the paired tasks reward real interaction, so listen to what the other candidate says and build on it.

Finally, do not judge a test by its reputation for being “easier”. Neither exam is easier in itself; they measure different things. The right one is the one that is accepted where you are going, at a time that fits your plans, and at a level your English has already reached.

Questions people ask

Sources: IELTS Academic test format, IELTS General Training test format, IELTS scoring in detail, IELTS test format and results (British Council), B2 First exam format, B2 First results, C1 Advanced exam format, C1 Advanced results.