IELTS vs TOEFL vs Duolingo English Test: Which One Should You Take?

Most students ask "which English test is easiest?" That's the wrong question. The right question is: which test do your target universities accept, and which format suits how you perform under exam conditions? Get those two answers right and the choice makes itself.

The decision tree is simple: check your university list first, then pick the format you're better at. If all your target universities accept all three, choose based on cost and convenience. Duolingo is 70% cheaper and can be taken from home — but verify acceptance at each institution before booking it.

Head-to-head comparison

Which test is right for your situation?

Take IELTS if: you're applying to UK, Australian, or Canadian universities; you're applying for UK visa purposes (IELTS is often required specifically for UK visas, not just university admissions); or you prefer a face-to-face speaking component over speaking into a computer.

Take TOEFL if: your target universities are primarily in the US and you're comfortable with a fully computer-based adaptive format. TOEFL's integrated tasks (where you read, listen, then write/speak about the same topic) suit candidates who can synthesise information quickly.

Take Duolingo if: you've confirmed your specific universities accept it AND you want to save money and test quickly from home. At $65 versus $215–$250 for IELTS/TOEFL, the saving is real — but only if every university on your list accepts it. One exception ruins the plan.

How the test format changes your preparation

IELTS Academic has four separate sections: Listening (30 min), Reading (60 min), Writing (60 min), and Speaking (11–14 min with a human examiner on a different day). Each section is scored separately from band 4.0–9.0. Most UK universities require an overall band of 6.5–7.0 with no component below 6.0.

TOEFL iBT uses integrated tasks — you might read a passage about a topic, listen to a lecture on the same topic, then write a response comparing both. If you're better at synthesising multiple sources quickly, TOEFL's format may suit you more. If you do better in separate skill sections, IELTS is more predictable.

FreeStudentTools research shows that students who are stronger in speaking tend to prefer IELTS — the face-to-face examiner format feels more natural for many people than speaking into a computer microphone. Students who are stronger in writing and reading sometimes prefer TOEFL's integrated structure.

Typical score requirements by destination

• UK undergraduate (Russell Group): IELTS 6.5–7.0 overall; no component below 6.0–6.5
• UK postgraduate (research): IELTS 7.0 overall; components 6.5–7.0
• US university (standard): TOEFL 80–100 iBT or IELTS 6.5–7.0
• US Ivy League / top 20: TOEFL 100+ or IELTS 7.0+
• German university (English programme): IELTS 6.0–6.5 or TOEFL 79–90
• Canadian university: IELTS 6.5–7.0 or TOEFL 88–100

How to prepare — choosing between test types

Once you've chosen your test, preparation logic differs. IELTS preparation focuses on four discrete skills: the writing section (Task 1 = graph description; Task 2 = argumentative essay) requires specific academic writing techniques that don't come naturally. The listening section uses British, Australian, and American accents — exposure to all three matters.

For IELTS preparation specifically, see our 8-week IELTS study plan which breaks down exactly what to practise week by week. For scholarship applications specifically, check the requirements for Chevening, Fulbright, and DAAD — each has specific score minimums beyond what the university requires.

What to do before booking your test

List every university you're applying to. Check each one's English language requirements page — not the general admissions page, the specific language requirements page. Note which tests they accept and what minimum scores they require. If any university requires IELTS specifically (or doesn't accept Duolingo), that overrides your preference. Book the test that works for all of them.