TOEFL vs. IELTS vs. Duolingo English Test: Which Should You Take?
You don't have to figure this out alone, the team at Studentbuddy is here to support you every step of the way.
All three tests measure English proficiency, but they differ meaningfully in format, cost, turnaround time, and, critically, which universities accept them. Never assume interchangeability; always verify acceptance first.
Format differences that matter
TOEFL is entirely computer-based with a strong academic focus. IELTS offers both computer and paper formats and includes a face-to-face speaking component. Duolingo English Test is taken at home, adaptive in difficulty, and typically returns results within 48 hours, far faster than the other two.
Cost and turnaround
Duolingo is generally the cheapest and fastest option, TOEFL and IELTS cost more and typically take 1–2 weeks for official results, though timelines vary by test center and country.
University acceptance is the deciding factor
An increasing number of universities accept Duolingo, but not all, and some highly selective schools still require TOEFL or IELTS specifically. Check your exact target schools' English proficiency requirements page before choosing, rather than picking based on convenience alone.
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Do all US universities accept the Duolingo English Test?
No, acceptance varies by school. Always confirm on each university's specific admissions requirements page.
Which test is easiest to prepare for quickly?
This varies by individual strength, but Duolingo's shorter, adaptive format often requires less dedicated prep time than TOEFL or IELTS.
Can I retake these tests if I'm not happy with my score?
Yes, all three can be retaken, though most have a minimum waiting period between attempts.
How long are TOEFL and IELTS scores valid?
Typically two years from the test date for both TOEFL and IELTS.
