IELTS vs Duolingo English Test
IELTS vs the Duolingo English Test: scoring scales, at-home versus centre format, human versus AI marking, and why many visa routes accept only IELTS.
Both measure English, but they differ in scale, format and — most importantly — where they are accepted. The Duolingo English Test is lower cost, sat at home in about an hour and AI-scored; IELTS is centre-based with a human-marked live interview and far wider acceptance, including visa and professional routes that do not take DET.
The Duolingo English Test (DET) and IELTS both certify English proficiency, but they are built around different priorities. DET optimises for cost, speed and convenience — an adaptive test taken at home and returned in days — while much of IELTS's value lies in how widely its result is recognised. The right choice depends far less on which test is "harder" and far more on whether the place you are applying to accepts the score.
At a glance
Every cell is a fixed structural fact about how each test is designed and recognised — not a fee, price or dated figure. Acceptance, in the final row, is the difference that most often decides the choice.
| Dimension | IELTS | Duolingo English Test (DET) |
|---|---|---|
| Score scale | Band 0-9 in half-band steps, per module plus an overall band | 10-160 in steps of 5: one overall score plus four subscores |
| Structure | Four separate timed papers: Listening, Reading, Writing, Speaking | One adaptive test blending reading, writing, listening and speaking tasks |
| Adaptive? | No — fixed forms; every candidate sits the same-length paper | Yes — question difficulty adjusts to your answers |
| Speaking assessment | Live one-to-one interview with a certified human examiner | Recorded spoken responses scored by algorithm; an ungraded video interview is shared with institutions |
| Marking | Human examiners mark Writing and Speaking; Listening and Reading to an answer key | Automated (machine) scoring, with the recorded session reviewed by human proctors |
| Where you take it | At an official test centre (computer or paper); at-home IELTS Online has narrower acceptance | At home on your own computer with a webcam, on demand, remotely proctored |
| Test length | Around 2 hours 45 minutes (Speaking may be a separate slot) | About 1 hour |
| Results turnaround | Computer-delivered typically within a few days; paper around two weeks | Usually within about two days |
| Retakes | No limit on attempts; One Skill Retake (resit a single module) offered in many markets, not all | A capped number of certified tests within a rolling period; the whole test is retaken |
| Acceptance breadth | Very broad: universities, plus visa, immigration and professional-registration bodies worldwide | Broad and growing for university admissions, but not accepted for many visa/immigration routes or professional registers |
Acceptance is set by each institution, visa authority and professional body — not by the test maker — and it changes over time. Many admissions offices accept DET, but a number of immigration and visa routes and most professional registers do not. Always confirm on the official page for your specific course, visa or licence before booking either test.
Which should you choose?
Choose IELTS if…
- Your route is a visa, immigration or permanent-residence application — many, including UK SELT routes, Canadian Express Entry and Australian skilled migration, do not accept the Duolingo English Test.
- A professional register such as a nursing or medical council is assessing your English — these bodies typically require IELTS or OET, not DET.
- You want the most widely recognised result, so one sitting can serve study now and a migration or licensing route later.
- The institution or authority you are applying to lists IELTS among its accepted tests but not DET.
Choose Duolingo English Test if…
- You are applying only to universities or colleges that explicitly accept DET for admission, and no visa authority or professional body needs the score.
- Testing at home on demand, with a result in about two days, matters more to you than booking a centre appointment.
- Lower cost and a shorter sitting are priorities, and you have confirmed every institution on your list accepts it.
- You have checked each target's official page and DET meets the score it states.
How the two tests are built
IELTS reports on a band scale from 0 to 9 in half-band steps, with a separate band for each of four papers — Listening, Reading, Writing and Speaking — plus an overall band. It comes in two variants, Academic and General Training, and every candidate sits a fixed-length paper. The Duolingo English Test reports on a 10-160 scale in steps of 5, giving one overall score plus four subscores (Literacy, Comprehension, Conversation and Production), and it is computer-adaptive: the difficulty of each task shifts in response to your answers, which is why it finishes in around an hour rather than IELTS's roughly two hours and forty-five minutes.
The biggest format difference is how speaking and marking work. IELTS Speaking is a live one-to-one interview with a certified human examiner, and Writing and Speaking are marked by trained examiners; Listening and Reading are scored against a fixed answer key. On DET you record spoken and written responses to on-screen prompts, and these are scored by automated models, with the recorded session reviewed by human proctors for integrity — there is no live interviewer, though an ungraded video interview and writing sample are shared with institutions.
IELTS is normally taken at an official test centre, on computer or paper; an at-home IELTS Online (Academic) option exists but has narrower acceptance than the centre test. DET is taken at home on your own computer with a webcam, on demand, and is remotely proctored throughout.
Acceptance is the real dividing line
The tests are closer on content than they are on recognition, and recognition is where the decision usually turns. IELTS is accepted extremely broadly — by universities, and by immigration, visa and professional-registration bodies worldwide. Many university and college admissions offices now also accept the Duolingo English Test, and its acceptance for study has grown quickly, but that breadth largely stops at admissions.
For visa and immigration purposes the gap is sharp. The UK Home Office does not list the Duolingo English Test among its approved Secure English Language Tests (SELTs), so it cannot be used where a route requires a SELT; Immigration, Refugees and Citizenship Canada does not accept DET for Express Entry or permanent residence; and Australia's Department of Home Affairs does not list it among the tests that satisfy a visa English requirement. Professional registers — nursing and medical councils, for example — typically require IELTS or OET rather than DET.
Because acceptance is set by each institution, visa authority and professional body — not by the test maker — and because it changes over time, the only reliable step is to check the official page for your specific course, visa or licence before you book either test. Where a route does not accept DET, no score on the DET scale, however high, will satisfy it.
Cost, convenience and who each suits
DET's genuine advantages are practical: it is generally lower cost than IELTS, can be booked and taken at home on demand rather than at a scheduled centre appointment, is shorter, and returns a result in roughly two days. For an applicant whose entire list is universities that clearly accept DET, those are real reasons to prefer it. IELTS computer-delivered results also arrive within a few days (paper is closer to two weeks), but IELTS requires a centre booking and a longer sitting.
So the tests suit different situations rather than different ability levels. DET fits a study-only applicant who has confirmed every target accepts it and who values speed, cost and convenience. IELTS fits anyone whose plans touch a visa, immigration or professional-registration route, or who simply wants the widest-recognised result so a single sitting keeps future options — including migration — open.
Reading a DET score in IELTS terms
Duolingo publishes an approximate comparison between its 10-160 scale and IELTS bands, which is useful for gauging roughly where a target sits — a DET score of about 120, for instance, lines up with around IELTS 6.5. It is a rough guide only, not an official equivalence, and the increments between the anchor scores move in steps of 5.
What matters in practice is the table published by the place you are applying to. An institution or authority names the test it accepts and the score it wants on that test's own scale; a concordance cannot override that, and it cannot make a DET score usable on a route that does not accept DET at all. Treat the mapping below as orientation, then confirm the actual requirement at source.
Duolingo English Test to IELTS score guide
Duolingo publishes an approximate comparison between its 10-160 scale and IELTS bands. It is orientation only: each university, visa authority or professional body sets the score it wants on the scale it names, and many do not accept DET at all.
| Duolingo English Test | Approx. IELTS band |
|---|---|
| 160 | 8.5 |
| 150 | 8.0 |
| 140 | 7.5 |
| 130 | 7.0 |
| 120 | 6.5 |
| 110 | 6.0 |
| 100 | 5.5 |
| 90 | 5.0 |
Scores between these anchors move in steps of 5. The mapping is from Duolingo's own published IELTS comparison and is indicative, not official equivalence — an institution's or authority's own accepted-score table is the only one that governs your application. Where a route does not accept the Duolingo English Test, no concordance makes the score usable for it.
Common questions
Is the Duolingo English Test easier than IELTS?
Neither test is officially easier — they are scored differently and test in different ways, so the comparison does not hold. DET is adaptive, sat at home in about an hour and machine-scored; IELTS is centre-based, longer, and has a live human examiner for Speaking. Which feels more comfortable depends on you, but the decisive question is usually acceptance, not difficulty.
Is the Duolingo English Test accepted for a UK student visa?
The UK Home Office does not list DET among its approved Secure English Language Tests (SELTs), so it cannot be used where a route requires a SELT — IELTS for UKVI can. For some degree-level courses a university may assess English itself under its sponsor status and accept DET for admission, but that is the institution's decision, not a visa-level acceptance. Confirm the current rules on the official UK government and university pages before booking.
Does Canada (IRCC / Express Entry) accept the Duolingo English Test?
No. Immigration, Refugees and Citizenship Canada does not accept DET for Express Entry or permanent residence; those routes read approved tests such as IELTS General Training, CELPIP and the French tests. Some Canadian universities do accept DET for admission. If your plans include PR, IELTS is the safer submission — verify on the official IRCC pages.
Is the Duolingo English Test accepted for Australian skilled migration?
Australia's Department of Home Affairs does not list DET among the tests that satisfy a visa English requirement; it names IELTS, PTE Academic, TOEFL iBT, Cambridge and OET. Individual Australian universities may accept DET for admission. For any skilled-migration or points purpose, confirm the accepted tests on the official Home Affairs pages.
Do US universities accept the Duolingo English Test?
Many do — the USA is where DET is most widely accepted for admissions, and the F-1 student visa itself sets no English-test minimum, so the university's requirement is the one that matters. Acceptance and the required score still vary by programme, and some graduate or professional programmes prefer IELTS, so check the specific programme page rather than assuming.
Is PTE easier than IELTS?
Neither is officially easier. PTE Academic is fully computer-scored, including speaking, while IELTS uses a live human examiner for Speaking and human markers for Writing — some candidates prefer one format over the other. As with DET, the practical decision is acceptance for your route rather than perceived difficulty; check what the institution or authority you are applying to states.
Sitting IELTS? Practise it in the real interface.
Start a mock test