IELTS vs PTE vs Duolingo: Which English Test Should You Take?

The distinction almost everyone misses

Before format, before price, before how long the test takes: a test your university accepts is not automatically a test your visa authority accepts. This single confusion causes more wasted money in our office than any other, and it is completely avoidable.

Universities set their own admissions policy and can accept whatever they judge to be reliable evidence. Immigration authorities maintain their own approved lists, and those lists are shorter, are revised, and in some cases require the test to be taken at a specific class of test centre.

• The UK operates a formal system of Secure English Language Tests (SELTs). For most student visa applicants studying below degree level, and for any applicant whose sponsor requires it, the test must be a SELT taken at an approved centre. This is why IELTS for UKVI exists as a separate product: the content matches IELTS Academic, but it is delivered under additional identity and security conditions and the certificate carries a UKVI number. Booking plain IELTS Academic when you needed IELTS for UKVI means paying twice.
• Ireland accepts a range of recognised tests, with the institution's own requirement usually binding — but the visa office can and does question weak or unusual evidence.
• Canada requires the institution's language condition for admission, and separate, specified tests for immigration programmes such as the post-graduation work permit and Express Entry. The test that got you admitted may not be the test that counts later.
• The Duolingo English Test is widely accepted by universities, but its status with immigration authorities has changed more than once — removed from and later re-admitted to approved lists in some jurisdictions. Verify its current standing with the relevant authority before relying on it for a visa.

Requirements change. Treat everything below as general guidance and confirm current acceptance with the test provider, the university's admissions page and the immigration authority before you book.

What each test actually looks like

IELTS Academic

Four sections — Listening, Reading, Writing, Speaking — on paper or computer at a test centre, with an at-home option in some markets. Speaking is a live interview with a human examiner: an introduction, a two-minute long turn from a cue card, and a discussion. Writing is two tasks: describing visual data and a discursive essay. Total testing time is roughly two hours forty-five minutes, with Speaking sometimes scheduled on a different day.

PTE Academic

A single computer-based session at a test centre, around two hours, with an at-home option in some markets. The structure is integrated rather than cleanly separated: many individual tasks assess more than one skill at once. Speaking is recorded into a headset with no human examiner present. Task types include read-aloud, repeat sentence, describe image, re-tell lecture, summarise written text and essay.

Duolingo English Test

Taken at home on your own computer under remote proctoring, in about an hour. The core is a computer-adaptive section that adjusts difficulty as you answer, followed by short recorded speaking and writing samples sent to institutions alongside your score. No test centre, no appointment, no travel — which is exactly its appeal and, for some authorities, exactly its problem.

Scoring scales and rough equivalences

The three tests use unrelated scales, and every published concordance is approximate. Use the table below to orient yourself, then check the actual requirement your university publishes for the test you intend to sit — never convert a requirement yourself and assume it holds.

Two warnings about equivalence. First, most institutions set a minimum in each section as well as an overall score — an overall 6.5 with a 5.5 in Writing usually fails. Second, Duolingo reports subscores on a different basis from the other two, so section minimums do not map neatly at all.

Human marking, automated marking, and what it means for you

IELTS Writing and Speaking are marked by trained human examiners against published band descriptors. PTE is marked entirely by automated scoring engines. Duolingo is automated, with human review and proctoring checks layered on.

This is not a quality argument — it is a strategy argument.

• Automated marking rewards mechanical accuracy. Clear pronunciation, steady pace, fluency without long pauses and content words drawn from the source material score well. Rhetorical flair and unusual structures do not help and can hurt.
• Human marking rewards communication. An IELTS examiner can recognise a well-argued point expressed with a slight accent. A scoring engine cannot reward what it does not detect.
• Automated marking is unforgiving of silence. If you pause to think in PTE's speaking tasks, the recording may stop — candidates who would interview well sometimes score badly here purely on timing behaviour.

In short: if you speak fluently but not always accurately, PTE is harsher than it looks. If you speak accurately but hesitantly, IELTS is kinder.

The three tests side by side

Figures below are indicative and vary by country and test centre. Verify with the provider before booking.

Which should you choose?

Choose IELTS if…

You are applying to the UK and your route requires a SELT — in which case book IELTS for UKVI specifically. Also choose IELTS if you are applying to regulated professions (nursing, medicine, some engineering registrations), if you are targeting several countries at once and want one result that will be accepted everywhere, or if you interview well with a person and freeze in front of a microphone. Our UK study guide and the Ireland student visa checklist both set out where the English evidence sits in the wider document set.

Choose PTE Academic if…

You need results fast, you are comfortable with computers, and you would rather be scored on measurable accuracy than on rapport. It suits candidates applying to Australia, New Zealand, Canada and Ireland, and candidates who have already sat IELTS once and lost marks on Speaking for reasons they could not diagnose. If you are on a Canadian timeline, read our Canada study permit guide for where the language requirement appears both at admission and again at the post-graduation work permit stage.

Choose Duolingo if…

Your target institutions explicitly accept it, your visa route does not require a SELT, budget is tight, and there is no convenient test centre near you. It is a genuinely good option for applicants to institutions in Ireland and continental Europe that list it — see our guide to studying in Germany and the Netherlands — but confirm acceptance programme by programme, not university by university. Departments differ.

Preparing, section by section

Listening

The gap between a 6.5 and a 7.5 in Listening is almost never vocabulary — it is prediction. Before the audio starts, read the questions and decide what shape of answer each needs: a number, a name, a date, a noun. Then listen for that shape. Train with unscripted material at natural speed, across British, Australian, North American and Indian accents. In PTE, practise typing while listening. In every test, transfer answers exactly as heard; a correct answer spelled wrong scores nothing.

Reading

Timing is the whole examination. Do not read the passage properly first: skim for structure, read the question, scan for where the answer lives, then read that part closely. Learn to recognise paraphrase — questions never repeat the passage's wording. Drill the specific question types that lose people marks, True/False/Not Given in IELTS and re-order paragraphs in PTE, until the logic is automatic.

Writing

Answer the question that was asked. Most essays lose marks not for language but for addressing an adjacent topic, ignoring half a two-part prompt or drifting off task. Spend three minutes planning: position, two or three supporting paragraphs with a specific example each, conclusion. Write clear, correct sentences of varied length rather than reaching for structures you cannot control. Hit the word count — under-length answers are penalised — and leave three minutes to check articles, plurals and tenses, where most avoidable marks go.

Speaking

Fluency beats vocabulary. Keep talking at a steady pace, and buy thinking time with a natural phrase rather than silence. Develop your answers: in IELTS every answer needs a reason and an example, because one-line answers cannot demonstrate range. For PTE, record yourself and work on clarity and pace rather than accent — the engine cares about intelligibility, not about sounding native. For Duolingo, practise speaking to a prompt on a timer with no listener, a genuinely strange skill that improves quickly.

The mistakes that cost band scores

1. Booking the wrong version of the right test. IELTS Academic instead of IELTS for UKVI; IELTS General instead of Academic. Read the requirement twice.
2. Optimising for the overall score and ignoring section minimums. Most rejections on English are section failures, not overall failures.
3. Memorised answers. Examiners and scoring engines both detect them, and both penalise them. A rehearsed speech that does not fit the question scores worse than a plain honest answer.
4. Practising without timing. Almost everyone can do IELTS Reading correctly with unlimited time. Nobody gets unlimited time.
5. Leaving the test to the end of the application timeline. Results take days, sending them takes longer, and a retake needs a booking slot. Sit your test early enough that one retake still fits comfortably before your offer deadline — the sequencing we recommend in our complete guide to studying in Ireland puts the English test almost a year ahead of the intake for exactly this reason.
6. Ignoring the technical setup for at-home tests. A failed connection, a noisy room or a second face appearing on camera can void a result outright. Test the equipment the day before, not the hour before.

The right test is the one that satisfies both gatekeepers, plays to how you actually perform under pressure, and leaves you enough runway to sit it twice if you have to. Work out those three things first, and the choice usually makes itself.