You’ve been dreaming about studying abroad, but you need to take an English test. Which English proficiency test is best for you? If you’ve been staring at a browser full of tabs comparing IELTS vs TOEFL vs Duolingo, you’re not alone.
You can use results from either to prove your English ability, but they differ significantly in format, cost, global acceptance, and who they’re best suited for. Choosing the wrong test can cost you hundreds of dollars, delay your application, or worse, lock you out of your target university.
That is why we put this guide together to cut through the noise. After reading this post, you’ll know exactly which test to take, based on your destination, budget, and timeline.
Quick Comparison: IELTS vs TOEFL vs Duolingo English Test at a Glance
| Feature | IELTS | TOEFL iBT | Duolingo English Test |
|---|---|---|---|
| Cost | $200–$245 USD | ~$235 USD | $59–$65 USD |
| Duration | 2 hrs 45 mins | ~2 hours | ~1 hour |
| Format | Paper or computer | Computer-based | 100% online (at home) |
| Score Scale | 1–9 bands | 1–6 bands | 10–160 |
| Results | 3–5 days | ~72 hours | Within 48 hours |
| Score Validity | 2 years | 2 years | 2 years |
| Accepted By | 12,500+ organisations | 11,000+ schools | 5,500–6,000+ universities |
| Test Location | Test centre (mostly) | Test centre or home | 100% at home |
What Is IELTS? Format, Scoring & Acceptance for Study Abroad
The International English Language Testing System (IELTS) is the world’s most widely accepted English proficiency test. It is recognised by over 12,500 organisations across more than 140 countries, including universities, employers, and immigration authorities.
It is jointly owned and administered by the British Council, IDP Education, and Cambridge University Press & Assessment.
IELTS Test Formats: Academic vs General Training vs UKVI
There are two versions of the IELTS test:
- IELTS Academic: for students applying to undergraduate and postgraduate programmes abroad.
- IELTS General Training: for those seeking work experience, training, or migration to English-speaking countries.
A third variant, IELTS for UKVI (UK Visa and Immigration), is specifically required for UK student visas in some circumstances.
IELTS Test Structure and Sections (2026 Update)
The IELTS exam has four sections:
- Listening: 30 minutes, 40 questions
- Reading: 60 minutes, 40 questions (content differs between Academic and General Training)
- Writing: 60 minutes (Task 1: a report or letter; Task 2: an essay)
- Speaking: 11–14 minutes with a live human examiner (face to face or via video)
Total test time: 2 hours and 45 minutes
2026 Update:
IELTS is transitioning to a computer-delivered format fully from mid-2026, phasing out paper-based testing across most test centres. The format and scoring remain the same, only the delivery method changes.
IELTS Scoring: Band Scores Explained for University Admission
IELTS uses a band score system from 1 to 9, awarded in whole and half bands (e.g., 6.0, 6.5, 7.0). Your overall band score is the average of your four section scores.
- Most UK and Australian universities require 6.0–7.0 overall
- Postgraduate programmes typically require 6.5–7.0
- Top-tier institutions like Harvard, MIT, and Stanford generally require 7.0 or above
- A single band below 5.5 in any section can block admission, even with a solid overall average
IELTS also introduced the One Skill Retake (OSR) policy. It means that if you narrowly missed the mark in just one section, you can retake that single component rather than sitting the entire test again.
IELTS Cost and Score Reporting Fees
The IELTS exam fee varies by country. In the US and UK, expect to pay between $200 and $245 USD. Additional score reports to universities are free for up to five institutions; extra reports carry a small fee.
This means if you are in Nigeria, you may pay up to 350,000 Naira because of exchange rates. The same goes for all other countries like South Africa, Kenya, or Ghana.
What is TOEFL iBT? Updated Format, Scoring & Global Acceptance
The Test of English as a Foreign Language (TOEFL iBT) is developed and administered by ETS (Educational Testing Service). It is accepted by more than 11,000 schools in 190 countries, with particular dominance among US universities.
TOEFL Test Structure: Reading, Listening, Speaking, Writing
The TOEFL iBT tests four skills:
- Reading: 2 passages, 20 questions (adaptive in 2026)
- Listening: lectures and conversations, questions follow (adaptive in 2026)
- Speaking: 4 tasks, recorded via microphone
- Writing: 2 tasks, including the new academic discussion task
Total test time: approximately 2 hours
The TOEFL can be taken at a test centre or as the TOEFL iBT Home Edition, where you take the test sitting in your own home under online proctoring.
TOEFL Scoring: New 1.0–6.0 Band Scale Explained (2026 Change)
This new update is critical to know if you’re preparing for the TOEFL in 2026.
From January 21, 2026, TOEFL iBT transitioned to a new scoring scale. The traditional 0–120 point scale has been replaced with a 1.0–6.0 band scale (in half-point increments like 4.5, 5.0, 5.5).
Each of the four sections is scored on this scale, and your overall score is the average of the four section scores.
Score reports during the 2026–2028 transition period will show both the old and new scale, helping universities and students adjust.
A rough guide to what scores mean in the new system:
- Band 5–6: Equivalent to C1–C2 (strong); expected by selective and top-tier universities
- Band 4–5: Equivalent to B2–C1; mid-tier universities
- Band 3.5–4.5: Equivalent to B1–B2; less selective programmes
Related: Airport Prohibited Items: What Nigerian Travelers Cannot Take Abroad
TOEFL Cost and Home Edition vs Test Centre Options
TOEFL iBT typically costs around $235 USD, though fees vary slightly by country. Each score report sent to a university costs an additional fee after the initial four free sends.
What Is the Duolingo English Test? Fast, Affordable & Online
The Duolingo English Test (DET) is the new generation of English proficiency testing. It is faster, cheaper, and entirely online. Developed by Duolingo, you can take this test anytime you want, as it is available 24/7, and can be accessed from anywhere in the world. You don’t need to look for any test centre, and your results will be delivered within 48 hours.
It actually started as a niche alternative, but the DET has matured into a mainstream choice. As of 2026, the DET is accepted by over 5,500 to 6,000 universities and institutions worldwide, including the Ivy League, Russell Group universities, and top Canadian and Australian institutions.
Duolingo English Test Structure: Adaptive Format Explained
The DET takes about one hour and is divided into three main parts:
- Adaptive Challenge (~45 minutes): This is the core test, where question difficulty adjusts in real time based on your performance. Tasks include reading comprehension, fill-in-the-blank words, listening dictation, speaking aloud, and open-ended written and spoken responses.
- Video Interview (~10 minutes): In this section, you answer two open-ended questions on camera. It will be recorded and shared with institutions alongside your scores.
- Writing Sample: They will give you a prompt, and you will give a short written response to the prompt. They also sent this written response to institutions for review.
The adaptive format means the test constantly recalibrates to your level, producing an accurate score faster than traditional linear tests.
DET Scoring: 10–160 Scale and University Score Requirements
DET scores range from 10 to 160, reported in increments of 5. Your overall score is paired with four subscores: Literacy, Comprehension, Conversation, and Production.
Score benchmarks:
- 100–110: Sufficient for mid-tier undergraduate admissions (roughly equivalent to IELTS 6.0–6.5)
- 115–125: Well-ranked universities, Russell Group, leading Canadian research universities (≈ IELTS 7.0–7.5)
- 125+: Ivy League and competitive postgraduate programmes (≈ IELTS 7.5 and above)
Duolingo English Test Cost: Why It’s the Budget-Friendly Choice
At just $59–$65 USD per attempt, the DET is dramatically cheaper than IELTS or TOEFL. In fact, you can buy a bundle of two tests, available for only $100 (approximately $50 each). Duolingo also sends your score to an unlimited number of institutions at no extra cost. This is a significant advantage over IELTS and TOEFL, which charge per report after the first few.
IELTS vs TOEFL vs Duolingo: Detailed Comparison for International Students
Now that you have an idea of what each of these English proficiency tests offers, let us compare IELTS vs TOEFL vs Duolingo properly.
Cost Comparison- IELTS vs TOEFL vs Duolingo: Which Is Most Affordable?
If you are picking based on price, the price difference here is substantial.
| Test | Single attempt | Score sending |
|---|---|---|
| IELTS | $200–$245 | Free for 5 institutions, extra payment after |
| TOEFL iBT | ~$235 | Free for 4 institutions, extra payment after |
| Duolingo DET | $59–$65 | Free, unlimited |
If budget is a serious concern, the Duolingo English Test offers savings of $170–$210 per attempt compared to its competitors. For students who may need to retake, those savings multiply quickly.
Convenience & Accessibility- IELTS vs TOEFL vs Duolingo: Test Centre vs At-Home Options
This is where DET has transformed the landscape.
IELTS and TOEFL traditionally require you to travel to a registered test centre. While TOEFL now offers a home edition and IELTS now has a computer-based version widely available, neither matches the on-demand flexibility of the DET.
The Duolingo English Test is available 24 hours a day, 7 days a week, with no advance booking needed. For students in regions where test centres are scarce, or those facing tight deadlines, this is a genuine game-changer.
Test Format & Experience (IELTS vs TOEFL vs Duolingo): Which Style Matches Your Strengths?
Each test feels different.
IELTS is the most “traditional exam” experience. For example, the Speaking section is conducted with a live human examiner, either in person or via video call. Many students find this more natural and less nerve-wracking than speaking into a computer. The reading and writing tasks are academic and substantial.
TOEFL is entirely computer-based. The speaking tasks are recorded responses, and the integrated writing task requires you to synthesise information from a lecture and a reading passage. The 2026 update introduced adaptive reading and listening, making the experience feel more personalised.
Duolingo DET is the most casual in presentation, designed to feel less like a formal exam and more like an interactive assessment. However, “casual” does not mean easy. The adaptive algorithm is rigorous, and the open-ended speaking and writing tasks are evaluated seriously by institutions.
Global Acceptance: Where Is IELTS vs TOEFL vs Duolingo Recognised in 2026?
This is the most important factor for most test-takers and where the picture is most nuanced.
IELTS remains the most universally accepted test. If you’re applying to universities in the UK, Australia, Canada, New Zealand, or seeking immigration/visa approval, IELTS is almost always a safe choice. According to their official pages, they boast of over 12,500 organisations across 140+ countries accepting IELTS for student or professional proof of English proficiency. IELTS is the gold standard for international acceptance.
On the other hand, TOEFL dominates in the United States and is accepted globally, particularly at North American and European institutions. They are also boasting of 11,000+ organisations and schools accepting them.
Duolingo DET has achieved remarkable growth since it came on board. It is now accepted by 95% of the US News Top 100 Universities, all Ivy League schools, and over 5,500 institutions globally. That said, acceptance is not universal. Many countries and scholarship programmes still require IELTS or TOEFL specifically. The DET is not yet authorised as a Secure English Language Test (SELT) for certain UK visa types.
Pro Tip: Before choosing your test, check the specific English proficiency requirements for each university and programme you’re applying to. Some accept all three; others require IELTS or TOEFL specifically. Never assume.
Which English Proficiency Test Should You Take? TL;DR
This is the TL;DR segment of this long post.
Take IELTS If:
- You’re applying to universities in the UK, Australia, New Zealand, Canada, or Ireland
- Your target scholarship programme requires IELTS specifically
- You need a test that is accepted for immigration or visa applications as widely as possible
- You prefer a human examiner for the speaking test
- You want the most universally recognised qualification
Choose TOEFL If:
- You’re primarily targeting US universities
- You prefer a fully computer-based test with a structured academic format
- You want the option to take the test at home via the Home Edition
- The integrated academic tasks (reading + listening + writing/speaking) suit your strengths
- Your target universities show a preference or requirement for TOEFL
Go with Duolingo English Test if:
- Budget is a major consideration — you save $170–$200 per attempt
- You need results quickly (within 48 hours)
- There is no convenient test centre nearby
- Your target universities explicitly accept the DET
- You want unlimited free score sending to all your institutions
- You plan to retake the exam affordably to improve your score
- You’re applying primarily to US or Canadian universities
Can You Take More Than One English Proficiency Test? Smart Strategies
Absolutely yes, and many students do. A common strategy is to take the Duolingo English Test first because of its low cost and quick turnaround, then take IELTS or TOEFL if specific programmes require them. This approach lets you tick off the majority of applications affordably while leaving targeted options open.
If you’re applying to 10 universities, some of which accept DET and others that require IELTS, there’s no reason you can’t submit both. Just factor in the preparation time each test demands.
Common Mistakes to Avoid When Choosing IELTS vs TOEFL vs Duolingo
Whether you are taking a test to study or work abroad, look out for these common mistakes that can cost you money, time and even your visa.
Choosing the cheapest test without checking acceptance
The Duolingo DET is the most affordable option, but it’s not accepted everywhere. Always verify your target institution’s requirements before booking.
Underestimating preparation time
No matter which test you choose, adequate preparation is essential. The adaptive format of DET does not make it easier. It only makes it fair. IELTS and TOEFL also require practice with specific task types that many candidates find unfamiliar.
Forgetting about visa requirements
University admission and visa approval can require different tests. In some countries, only IELTS or TOEFL is accepted for immigration purposes, even if your university accepts the DET. Confirm both before making your decision.
Not accounting for score validity
All three tests are valid for two years. If you’re applying now for a programme that starts in 18 months, make sure your scores won’t expire before your enrolment date.
Ignoring section-specific requirements
Many programmes set minimum scores for each section, not just the overall score. A 7.0 overall IELTS score doesn’t help if your writing band is 5.5 and the programme requires 6.5 in all sections.
Frequently Asked Questions: IELTS vs TOEFL vs Duolingo English Test
Is the Duolingo English Test accepted as widely as IELTS in 2026?
Not quite, but the gap has narrowed significantly. DET is accepted by 95% of the US News Top 100 universities and over 5,500 institutions globally. However, IELTS remains the safer choice for UK, Australian, and immigration purposes. Always check your specific programme.
Which test is easiest — IELTS vs TOEFL vs Duolingo?
“Easiest” is subjective and depends on your strengths. Students who prefer face-to-face communication often find IELTS speaking more natural. Those comfortable with computer-based tasks may prefer TOEFL. The Duolingo DET’s adaptive format means you’re always being tested at your level, which some find less overwhelming. There’s no shortcut as all three require preparation.
How much does it cost to retake each test?
IELTS costs $200–$245 per retake. TOEFL costs approximately $235 per retake. Duolingo DET costs $59–$65 per retake, or you can buy two attempts for $100. For students expecting to retake, DET offers the most affordable multiple-attempt strategy.
Does the Duolingo test count for a UK student visa?
For most student visas where your university accepts DET as proof of English proficiency, the DET is sufficient. However, some UK visa types require a Secure English Language Test (SELT), for which DET is not yet authorised. Check the specific visa requirements for your situation.
What is the new TOEFL scoring system in 2026?
From January 21, 2026, TOEFL iBT uses a new 1.0–6.0 band scale (in 0.5 increments), replacing the former 0–120 scale. Your overall score is the average of the four section scores. Score reports during the 2026–2028 transition period include both scales for reference.
Final Verdict: Choosing Between IELTS vs TOEFL vs Duolingo for Study Abroad
There’s no single “best” test. There is only the best test for your situation. Let e give you a simple decision framework:
- UK, Australia, immigration focus → IELTS
- USA-focused, computer-based preferred → TOEFL
- Budget-conscious, flexible timeline, US/Canada/broad university list → Duolingo DET
- Applying broadly across multiple countries → Consider DET first, then IELTS or TOEFL for specific programmes
The English proficiency test you choose is one piece of a larger puzzle. What matters most is that you meet your target institution’s requirements and that you give yourself enough time to prepare properly.
Whichever test you choose, book early, practise with official materials, and don’t leave your preparation to the last minute.
Planning to study abroad? Explore our related guides on student visas, university application tips, and how to build a strong international study profile.
