Duolingo English Test: Complete Preparation Guide
Everything you need to know about the DET: format, scoring, study plan, sample questions, and how it compares to TOEFL and IELTS.
Quick Summary
- Cost: $59 USD (vs ~$200 for TOEFL, ~$250 for IELTS)
- Duration: ~1 hour, fully online from home
- Scoring: 10-160, aligned to CEFR levels A1-C2
- Results: Within 48 hours, send to unlimited schools free
- Accepted by: 5,000+ institutions worldwide
What Is the Duolingo English Test?
The Duolingo English Test (DET) is an online English proficiency exam you can take from home. Launched in 2020, it grew quickly during the pandemic as universities needed a remote testing option. Today, over 5,000 institutions across the US, UK, Canada, Australia, and Europe accept DET scores for admissions.
What makes DET different? It is fully online, costs $59, takes about 1 hour, and uses adaptive difficulty. The questions get harder or easier based on your answers. You do not need to visit a test center or schedule weeks in advance.
Your result is a score from 10 to 160, aligned to the Common European Framework (CEFR) from A1 to C2. Most universities publish minimum DET score requirements alongside their TOEFL and IELTS requirements.
Test Format and Structure
The DET has three parts: an adaptive section, a writing sample, and a video interview. The adaptive section is the core of the test and takes about 45 minutes.
Adaptive Section (45 minutes)
This section uses computer-adaptive technology. Each answer affects the next question. Answer correctly and the next question is harder. Answer incorrectly and it gets easier. This means every test taker faces a different set of questions.
Questions test four skill domains:
- Literacy: Reading passages, fill in blanks, letter writing
- Comprehension: Listen and type, read and complete
- Conversation: Speak about a topic, listen and respond
- Production: Write about a topic, speak about a topic at length
Writing Sample (5 minutes)
You write a short response on a given topic. This section is ungraded but sent to institutions as part of your score report. Admissions officers use it to assess your writing ability beyond the automated score.
Video Interview (5-10 minutes)
You record spoken responses to prompts. Like the writing sample, this section is ungraded but shared with institutions. It is your chance to demonstrate spoken fluency and pronunciation.
Scoring System (10-160)
DET scores range from 10 to 160 and map directly to CEFR levels. The test also reports four subscores: Literacy, Comprehension, Conversation, and Production. These help institutions see your strengths and weaknesses in each area.
| DET Score | CEFR Level | Ability Description |
|---|---|---|
| 10-55 | A1-A2 | Basic. Understands simple phrases and familiar expressions. |
| 60-85 | B1 | Intermediate. Can handle everyday situations and routine conversations. |
| 90-115 | B2 | Upper Intermediate. Fluent in familiar contexts, good for most university programs. |
| 120-160 | C1-C2 | Advanced. Near-native proficiency, suitable for competitive programs. |
What institutions look for: Most US undergraduate programs require a minimum score of 105-120. Graduate programs typically ask for 120-130. Top-tier universities may require 130+. Always check your target school's published requirements.
Question Types: Complete Breakdown
The DET uses 11 question types across four skill domains. Here is what to expect in each category.
Literacy Questions
- Read and Complete: Fill in the missing letters of a word in a sentence. Tests vocabulary and context understanding.
- Read and Select: Is this a real English word? Quickly identify real vs fake words. Tests vocabulary recognition.
- Interactive Reading: Read a passage and answer multiple-choice questions. Similar to academic reading comprehension.
Comprehension Questions
- Listen and Type: Hear a spoken sentence and type it exactly. Tests listening accuracy and spelling.
- Read and Complete: Cloze-style questions with letter hints to fill missing words in a text.
Conversation Questions
- Speak About the Photo: Describe an image in 90 seconds. Tests descriptive vocabulary and fluency.
- Read Then Speak: Read a short prompt, then speak for 30-90 seconds. Tests preparation and delivery.
- Listen Then Speak: Hear a question and respond verbally. Tests spontaneous speaking ability.
Production Questions
- Write About the Topic: A 5-minute written response (50-100+ words). Tests writing under time pressure.
- Interactive Writing: A multi-turn written conversation simulation. Tests sustained written communication.
Prepare for the DET with a Tutor
One-on-one tutoring is the fastest way to improve your speaking and writing for the DET. Compare top platforms to find the right tutor for your preparation.
DET vs TOEFL vs IELTS
Choosing between DET, TOEFL, and IELTS depends on your budget, timeline, and target universities. Here is how they compare side by side.
| Comparison Point | Duolingo English Test | TOEFL iBT | IELTS Academic |
|---|---|---|---|
| Cost | $59 | ~$200 | ~$250 |
| Duration | 1 hour | 3 hours | 2h 45m |
| Format | Fully online, at home | Online or test center | Online or test center |
| Scoring | 10-160 (integrated) | 0-120 (4 sections) | 1-9 Band (4 skills) |
| Results | 48 hours | 6-10 days | 3-13 days |
| Adaptive | Yes | No | No |
| Accepted by | 5,000+ institutions | 11,000+ institutions | 10,000+ institutions |
| Speaking | Video recording | Recorded responses | Live interview |
| Writing Sample | Video + Writing | 2 essays | 2 tasks |
| AI Proctoring | Yes (automatic) | Yes + human monitors | Yes + human monitors |
When to Choose DET
- You are on a tight budget (DET costs $59 vs $200+ for alternatives)
- You need results fast (48 hours vs 6-13 days)
- You are comfortable with computer-adaptive tests
- Your target institutions accept DET (check first)
When to Choose TOEFL or IELTS Instead
- You are applying to top-tier universities that prefer traditional tests
- Your target school does not accept DET
- You prefer a structured, non-adaptive format
- You have already prepared with TOEFL/IELTS materials
For a deeper comparison, read our full DET vs IELTS vs TOEFL guide which breaks down each test by cost, format, scoring, and acceptance.
2-Week Preparation Plan
Two weeks is the minimum time most learners need to prepare effectively for the DET. Adjust this plan based on your current English level and target score.
Week 1: Foundation (Days 1-7)
- Day 1-2: Understand the test format. Read through the question types above and watch Duolingo's official walkthrough video.
- Day 3-4: Take a free practice test on Duolingo's website. Identify your weakest skill domain.
- Day 5-7: Focus on your weak areas. Use our grammar resources like the modal verbs guide and phrasal verbs guide to strengthen vocabulary and grammar.
Week 2: Intensive (Days 8-14)
- Day 8-9: Practice writing and speaking prompts under timed conditions. Record yourself and review your responses.
- Day 10-11: Take full-length practice tests under real conditions (quiet room, no breaks, strict timing).
- Day 12-13: Review your mistakes. Focus on time management. Practice typing quickly and accurately.
- Day 14: Light review only. Rest, prepare your testing environment, and take the test.
Need Speaking Practice?
The DET speaking section requires you to respond clearly under time pressure. Practice with a tutor to build confidence. Compare Preply and iTalki to find a tutor for speaking preparation sessions.
If your general English needs improvement before the test, check our guide to the best courses for B1 learners.
Tips and Strategies
These practical tips come from test takers who scored 120+ on the DET. Apply them during your preparation and on test day.
- Practice typing quickly and accurately. The reading and writing sections are timed. Slow typing loses you valuable seconds.
- Speak clearly and at moderate pace. Fast speech can sound unclear. Slow speech might seem hesitant. Practice at a natural, steady pace. Working with a tutor through iTalki can help you build confident speaking skills before test day.
- Train with the adaptive format. Unlike TOEFL or IELTS, questions do not get easier if you struggle. Each wrong answer leads to harder recovery.
- Manage your testing environment. DET requires a quiet, well-lit room with a clean desk. No other people, no phones, no headphones (earplugs are allowed).
- Read aloud daily. This improves pronunciation for speaking tasks and builds reading fluency for the literacy section.
- Take the free official practice test at least 3 times. Familiarity with the interface reduces test-day anxiety.
- Watch your eyes. DET's AI proctoring tracks your eye movements. Looking away from the screen for too long can flag your test for review.
Frequently Asked Questions
How much does the Duolingo English Test cost?
$59 USD per attempt. You can pay and take the test at any time. There are no extra fees for sending your results to institutions. Compare that to TOEFL (~$200) and IELTS (~$250).
How long is the Duolingo English Test?
About 1 hour total. The adaptive section takes 45 minutes, plus a 5-minute writing sample and a 5-10 minute video interview. You can complete the whole test in a single session from home.
How long does it take to get DET results?
Results are available within 48 hours. You can send them to unlimited institutions for free once your score is ready. This is much faster than TOEFL (6-10 days) or IELTS (3-13 days).
How does the Duolingo English Test compare to IELTS?
DET is cheaper ($59 vs ~$250), shorter (1 hour vs 2h45m), and fully online. However, IELTS is accepted by more institutions and includes a live speaking interview with a human examiner. Choose based on your target schools.
What score do I need on the Duolingo English Test?
Most US undergraduate programs require 105-120. Graduate programs typically require 120-130. Top-tier universities may require 130+. Always verify with your target institution's admissions office.
Can I use Duolingo English Test for UK university applications?
Yes. Over 5,000 institutions worldwide accept DET, including many in the UK, US, Canada, and Australia. Always check each university's specific English language requirements before applying.
How many times can I take the Duolingo English Test?
You can take the DET as many times as you want. There is no limit. Learning materials and practice tests are free between attempts.
Is the Duolingo English Test harder than TOEFL?
DET uses adaptive questioning, so the difficulty adjusts to your skill level. Many find the format more comfortable because the test is shorter and taken from home. TOEFL has more established preparation resources available.
Does Duolingo offer free practice tests?
Yes. Duolingo offers a free full-length practice test on their website. You can take it unlimited times without paying anything. Use it to track your progress during preparation.
What is a good Duolingo English Test score?
A score of 120+ (C1) is considered excellent. A score of 105+ (B2) is sufficient for most university programs. Check your target institution's specific requirement before setting your target score.
This guide is for informational purposes. Test fees, requirements, and acceptance lists may change. Always verify with the official Duolingo English Test website and your target institutions.