If you need to prove your English for a university place or a visa, you’ve probably hit the question everyone’s asking in 2026: should you book the Duolingo English Test or sit IELTS? One is cheap, fast and done from your bedroom. The other is the test the whole world already trusts. They’re not interchangeable, and picking the wrong one can cost you money — or a rejected application. Here’s how they really compare, and how to choose the one that fits what you actually need.
What the Duolingo English Test actually is
The Duolingo English Test (DET) is an online test you take at home, on your own laptop, whenever suits you. There’s no test centre and no appointment — you just need a quiet room, a webcam and about an hour. It’s adaptive, so the questions get harder or easier depending on how you answer, and it scores you on a 10 to 160 scale. You usually get your results back within a couple of days. At around $65, it’s a fraction of the price of the traditional exams, which is a big part of why it’s exploded in popularity — especially for university applications.
What IELTS is — and why it’s still the standard
IELTS has been the global benchmark for English testing for more than 30 years, and it tests all four skills properly: listening, reading, writing and a live speaking interview with a real examiner. You sit it at an approved test centre, it runs about two hours and 45 minutes, and you’re scored on the familiar 0–9 band scale. Results come back in roughly three to thirteen days, depending on whether you take the computer or paper version. It costs more — usually north of £200 in the UK — but that price buys you something DET can’t always match: acceptance almost everywhere, for almost everything.
Cost, speed and convenience: where Duolingo wins
On these three points, it isn’t close. DET is cheaper, quicker to book, faster to deliver results, and you never leave the house. If you’re a student applying to several universities on a budget, that combination is hard to argue with — you can test on a Sunday night and have scores to send by Tuesday. The speaking section is recorded rather than live, which plenty of people find far less nerve-wracking than sitting across from an examiner. If your only goal is a university admission and your chosen institutions clearly accept DET, it’s often the smart, low-stress choice.
Acceptance: where IELTS still wins
Here’s the catch that trips people up. “Accepted” isn’t one thing. Thousands of universities now take DET for admission, but plenty of professional bodies, employers and — crucially — immigration authorities still don’t. In the UK, for instance, DET is not a UKVI-approved Secure English Language Test, so for most visa routes that require one you’ll still need IELTS for UKVI. Professional registration, such as for nurses and doctors, tends to work the same way. IELTS is accepted by well over 12,000 organisations worldwide, which is exactly why it stays the safe default when the stakes are high. Always check the specific requirements of your university, regulator or visa route before you book — the test that’s fine for admission may not be the one your visa needs. If IELTS is the route you’re on, our online IELTS preparation course is built around the exact scoring and question types examiners use.
So which should you take?
Match the test to the purpose, not the price tag. If you only need to satisfy a university that openly accepts DET, and you want to save time and money, take the Duolingo English Test. If you need the score for a UK visa, professional registration, or an institution that asks specifically for IELTS — or you simply want a result you’ll never have to second-guess — sit IELTS. When in doubt, IELTS is the one almost nobody turns away. Whichever you choose, the real difference on test day is preparation: knowing the format cold and practising under timed conditions. If you’d like a hand getting ready, take a look at our courses — we’ll help you walk in confident and walk out with the score you came for.
