Over 4,000 universities now accept the Duolingo English Test — a number that was close to zero just five years ago. Meanwhile, IELTS remains the most widely recognized English proficiency test worldwide, accepted by over 11,000 institutions. So when you're choosing between the two, you're not picking a winner — you're picking the right fit for your situation.
This head-to-head comparison of the Duolingo English Test vs IELTS covers everything you need to decide: format, cost, scoring, university acceptance, and which test plays to your strengths.
Duolingo English Test vs IELTS: Quick Comparison at a Glance
Before diving into the details, here's a side-by-side snapshot of the two tests:
| Feature | Duolingo English Test (DET) | IELTS (Academic) |
|---|---|---|
| Test Duration | ~60 minutes | ~165 minutes (2 hrs 45 min) |
| Test Fee | $65 USD | $245–$260 USD |
| Test Location | At home, online (anytime) | Test center or at home (limited dates) |
| Score Scale | 10–160 | Band 0–9 |
| Results Turnaround | 48 hours | 3–13 days |
| Score Validity | 2 years | 2 years |
| Score Sends | Unlimited free | 5 free, then $20+ each |
| Sections | Literacy, Comprehension, Conversation, Production | Reading, Listening, Writing, Speaking |
| Accepted By | 4,000+ institutions | 11,000+ institutions |
| Adaptive Format | Yes (computer-adaptive) | No (fixed difficulty) |
Test Format and Structure: What to Expect
Duolingo English Test Format
The DET is a computer-adaptive test, meaning the difficulty adjusts based on your responses. It consists of two main parts:
- Adaptive Section (~45 minutes): A mix of question types including read-and-select, fill-in-the-blank, listen-and-type, read aloud, write about a photo, and speak about a topic. Questions get harder or easier based on how you're performing.
- Video Interview + Writing Sample (~15 minutes): These are unscored but sent directly to institutions. You respond to open-ended prompts on video and in writing, giving admissions teams a sense of your communication style.
The adaptive format means no two test-takers see the exact same exam, and the scoring is more precise because the algorithm zeroes in on your actual ability level.
IELTS Academic Format
IELTS is a fixed-format test with four distinct sections:
- Listening (30 minutes): 40 questions across 4 recordings
- Reading (60 minutes): 40 questions across 3 academic passages
- Writing (60 minutes): Task 1 (data description) + Task 2 (essay)
- Speaking (11–14 minutes): Face-to-face interview with an examiner in 3 parts — introduction, long turn, and discussion
IELTS gives you a dedicated section for each skill, which some students prefer because it lets them focus on one skill at a time rather than switching rapidly between tasks.
Scoring: How DET and IELTS Scores Compare
One of the biggest questions students ask is how DET scores translate to IELTS bands. Here's an approximate equivalence table based on published institutional guidelines:
| DET Score | IELTS Band | Typical Requirement |
|---|---|---|
| 160 | 9.0 | Exceptional — rare requirement |
| 145–155 | 8.0–8.5 | Top-tier MBA/law programs |
| 125–140 | 7.0–7.5 | Most competitive universities |
| 110–120 | 6.0–6.5 | Standard undergraduate admission |
| 100–105 | 5.5 | Foundation/pathway programs |
| 85–95 | 5.0 | Conditional admission |
Keep in mind that score equivalencies vary by institution. Always check your target university's specific requirements for each test.
Cost and Convenience: Where DET Has the Edge
If budget and flexibility matter to you, the Duolingo English Test has clear advantages:
- Cost: At $65, the DET costs roughly one-quarter of what IELTS charges ($245–$260). If you need to retake, the savings add up fast.
- Scheduling: You can take the DET on any day, at any time, from your computer at home. IELTS requires booking weeks in advance and traveling to a test center (unless you take IELTS Online, which has limited availability).
- Results speed: DET results arrive within 48 hours. IELTS results take 3–5 days for computer-based tests and up to 13 days for paper-based.
- Score sends: DET lets you send scores to unlimited institutions for free. IELTS includes 5 free sends and charges $20+ for each additional one.
For students applying to multiple universities, DET's unlimited free score sends alone can save $100 or more compared to IELTS.
University Acceptance: Where IELTS Still Leads
IELTS is accepted by over 11,000 institutions across 140+ countries, including virtually every university in the UK, Australia, Canada, and Europe. It's also the standard for immigration applications to countries like Canada, Australia, and New Zealand.
The Duolingo English Test has grown rapidly to 4,000+ accepting institutions, with strong adoption in the US. Many top US universities — including Ivy League schools — accept DET scores. However, acceptance is still more limited for:
- UK universities: Adoption is growing but not universal
- Australian universities: Most still prefer IELTS or PTE
- Immigration purposes: DET is generally not accepted for visa or immigration applications
- Professional registration: Bodies like nursing boards and medical councils typically require IELTS or OET
The takeaway: always verify that your specific target institutions and programs accept the test you plan to take. Compare platform options to see which test aligns with your goals.
Which Test Should You Choose?
Choose the Duolingo English Test If:
- Your target universities accept DET scores
- You want a faster, cheaper testing experience
- You prefer testing from home on your own schedule
- You're applying primarily to US institutions
- You're comfortable with a computer-adaptive format
Choose IELTS If:
- You're applying to UK, Australian, or Canadian universities that don't accept DET
- You need scores for immigration (Express Entry, skilled visa, etc.)
- You prefer dedicated time for each skill section
- You want the widest possible acceptance globally
- You're applying for professional registration (nursing, medicine)
How to Prepare for Either Test with AI-Powered Practice
Whichever test you choose, preparation is what determines your score. PrepareBuddy offers AI-powered practice for both Duolingo English Test and IELTS, with features designed to maximize your score:
- Unlimited AI-generated practice tests that match official exam formats and difficulty levels, so you never run out of fresh material
- AI scoring with 95% accuracy that evaluates your speaking and writing against official rubrics — including IELTS band descriptors and DET scoring criteria
- Voice AI speaking practice with real-time pronunciation feedback across 30+ English accents
- Personalized study plans that adapt based on your performance, focusing your practice time where it matters most
With 50,000+ students prepared and a 95% satisfaction rate, PrepareBuddy gives you the tools to walk into test day confident — whether you're taking DET or IELTS.
Start Preparing Today
Not sure which test suits you better? Take a free practice test for either DET or IELTS on PrepareBuddy and see where you stand. Your results include detailed AI feedback showing exactly which areas to focus on, so you can build a preparation plan that works.
Ready to take the next step? Sign up for free and start practicing with AI-powered tests that mirror the real exam experience.
Join the Discussion