How Long to Prepare for the Duolingo English Test (1, 2 and 4-Week Plans)
The honest answer to "how long should I prepare for the Duolingo English Test?" depends on two numbers: the score you can get today and the score your university asks for. The test itself is short and the format is learnable in a few days. Raising your actual level of English takes much longer. This guide separates those two jobs, gives rough preparation times by score gap, and sets out 1-week, 2-week and 4-week plans you can follow as written.
1. What You Are Preparing For
Before planning your time, be clear about the test you are booking. These facts come from the official Duolingo English Test guidance at the time of writing (October 2026):
| Feature | Current format |
|---|---|
| Length | About 1 hour: a short introduction, roughly 45 minutes of adaptive questions, then about 10 minutes for the Writing Sample and Speaking Sample |
| Where | Online, at home, on your own computer with a webcam and microphone |
| Overall score | 10 to 160, in 5-point steps |
| Subscores | Four individual skills (Reading, Listening, Writing, Speaking) and four integrated subscores (Literacy, Comprehension, Conversation, Production) |
| Results | Usually within 2 days; a paid Faster Results option aims for about 12 hours |
| Price | US$70 for one test at the time of writing; check the official site before you pay |
Two details matter for planning. First, the test is adaptive: questions get harder or easier based on your answers, so you cannot "finish" it by memorising content. Second, the question types changed in July 2025. Read Aloud and Listen, Then Speak were removed and Interactive Speaking was added, so older prep material may show tasks you will not see. If you are new to the format, start with our overview of how to prepare for the Duolingo English Test.
2. Two Kinds of Preparation: Format and Level
Almost everyone underestimates one of these and overestimates the other.
- Format familiarity means knowing every question type, how long you get, how the timer behaves and what a good response looks like. This takes most people 3 to 7 days of focused practice. It reliably adds points, because a surprised test-taker wastes time and loses easy marks.
- Level improvement means your English actually gets better: more vocabulary, faster listening, more accurate grammar. This is slow. Moving one full CEFR level (for example, B1 to B2) commonly takes a few hundred hours of study, and our guide on how long it takes to learn a language explains why.
If your gap is small, format preparation may be all you need. If your gap is large, no amount of format practice will close it, and you should either allow more time or reconsider your test date.
3. How Long to Prepare, by Score Gap
Start by finding your current level with a timed practice test or a diagnostic, then subtract it from your target. The table below is rough guidance, not a guarantee. It is based on typical study of about 1 to 2 hours a day and assumes your current estimate is reasonably accurate.
| Gap to target | Rough preparation time | Main focus |
|---|---|---|
| Already at or above target | 3 to 7 days | Format, timing, one or two full mocks |
| 5 to 10 points | 1 to 2 weeks | Format plus your weakest subscore |
| 15 to 20 points | 3 to 6 weeks | Vocabulary, listening speed, structured writing and speaking |
| 25 points or more | 2 to 4 months or longer | General English level first, test practice later |
Two adjustments. If your current score is below about 90, gains often come faster because there is more basic vocabulary and grammar to pick up. If you are already above 125, each extra 5 points tends to take longer. Also budget for a margin: if your programme asks for 115, plan to reach 120 in practice. Our DET score guide explains what different scores mean.
4. The 1-Week Plan (Already Close to Target)
Use this if your practice score is within 5 points of your target, or you simply need to learn the format.
| Day | What to do (60 to 90 minutes) |
|---|---|
| 1 | Take a full timed practice test. Note your overall score and lowest subscore. |
| 2 | Reading tasks: Read and Select, Fill in the Blanks, Read and Complete. Aim for speed on real-word recognition. |
| 3 | Listening: Listen and Type, Interactive Listening. Practise typing exactly what you hear, including small words like "the" and "of". |
| 4 | Writing: Write About the Photo, Interactive Writing, Writing Sample. Use a fixed structure (see our DET writing and speaking tips). |
| 5 | Speaking: Speak About the Photo, Read, Then Speak, Interactive Speaking, Speaking Sample. Record yourself and listen back. |
| 6 | Second full timed practice test. Fix the one habit that cost you most. |
| 7 | Light review, technical check (camera, microphone, quiet room, ID), early night. |
5. The 2-Week Plan (5 to 15 Points to Gain)
Two weeks lets you do the 1-week plan properly and add targeted work on your weakest area.
- Days 1 to 2: full practice test, then review every wrong answer. Write down the three task types where you lost the most marks.
- Days 3 to 9: 30 minutes a day on your weakest subscore, 30 minutes on vocabulary review (15 to 20 new academic words a day with spaced repetition), 20 minutes rotating through the other task types.
- Day 10: second full practice test. Compare subscores with day 1.
- Days 11 to 13: timed writing and speaking practice every day, one response of each production task. Check for repeated grammar mistakes.
- Day 14: rest, set up your room and equipment, read the test rules again.
6. The 4-Week Plan (15 to 20 Points to Gain)
Four weeks is enough time to improve skills, not just technique. Keep the balance roughly 60% skill-building, 40% test practice.
| Week | Focus | Weekly target |
|---|---|---|
| 1 | Baseline and vocabulary | 1 full practice test, 100 new words in a review system, all task types tried once |
| 2 | Weakest subscore | Daily drills on the 2 to 3 task types behind that subscore, 20 minutes of English listening a day (podcasts, lectures) |
| 3 | Writing and speaking | 5 timed Writing Samples and 5 Speaking Samples, each checked for structure and range |
| 4 | Mocks and polish | 2 full timed practice tests, fix recurring errors, rest the day before |
For speaking practice without a partner, the methods in how to practise speaking a language alone work well for the DET, because every speaking task is answered to a screen anyway.
7. When to Book the Test
The DET can be bought and taken at home without fixed test dates, so the real deadline is your application, not the test calendar. Work backwards from it:
- Application deadline minus results time: allow at least 2 days for standard results, more if the deadline falls on a weekend.
- Minus a retake buffer: leave room for one more attempt if you miss your target. Check the official retake rules before you plan this, as limits apply to how many results you can certify in a set period.
- Minus preparation time from the table above.
A practical rule: book your first attempt at least 3 to 4 weeks before your deadline, and only once your last two practice scores are both at or above your target. If one practice score is above and one is below, you are not ready yet; another week of focused work is usually cheaper than a second test fee.
Derstina's DET preparation follows the same logic: an adaptive diagnostic estimates your starting point, then a personalised study plan counts down to your test date with DET-style drills, spaced-repetition vocabulary and a full timed mock to confirm you are ready.
Frequently Asked Questions
How long does it take to prepare for the Duolingo English Test?
If you are already close to your target score, 3 to 7 days of format practice is often enough. A gap of 5 to 10 points usually needs 1 to 2 weeks, 15 to 20 points around 3 to 6 weeks, and 25 points or more can take several months. These are rough estimates and depend on how much you study each day.
Can I prepare for the DET in one week?
Yes, if your English is already near the score you need. One week is enough to learn every question type, practise the timed writing and speaking tasks, and sit two full practice tests. It is not enough to raise your general English level by a large amount.
How long is the Duolingo English Test?
The test takes about one hour: a short introduction, around 45 minutes of adaptive questions, and about 10 minutes for the Writing Sample and Speaking Sample at the end. Results usually arrive within two days.
When should I book the Duolingo English Test?
Book your first attempt at least 3 to 4 weeks before your application deadline, so there is time for results and one retake if needed. Only book once your last two practice scores are both at or above your target.
How many hours a day should I study for the DET?
One to two hours a day is a realistic and effective amount for most students. Split it between vocabulary review, practice on your weakest question types, and timed writing and speaking responses, with a full practice test once or twice a week.
Find out how far you are from your DET target
The free DET diagnostic estimates your current score in a few minutes, so you can pick the right plan above instead of guessing. No signup needed to see your result.
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