How Long Is the Duolingo English Test (DET)?

Short Answer

About one hour in total, including the identity check, room scan, ear scan, and the adaptive test itself.

How That Hour Breaks Down

  • Setup and identity verification: a few minutes for the room scan, ear scan, and ID check
  • The Adaptive Test: roughly 45 minutes of reading, writing, listening, and speaking questions, adjusting in difficulty as you go
  • Speaking and Writing Sample: a short unscored (but reviewed) segment at the end

How It Compares to Other English Tests

Test Approximate Duration
Duolingo English Test ~1 hour
TOEFL iBT ~2 hours
IELTS ~2.5–3 hours (plus a separately scheduled speaking interview in many cases)

Should You Budget Extra Time Beyond an Hour?

Yes — plan for closer to 75–90 minutes of total availability. Give yourself buffer time before you start for the technical setup checks, and don't schedule anything immediately afterward in case the room scan or ID verification takes a couple of extra minutes to complete.

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