KET vs PET: What's the Difference and Which Should You Take?
Bottom line first: KET and PET are both Cambridge English exams, but KET is A2 (elementary) and PET is B1 (intermediate)—a full CEFR level apart. Choose based on current ability, not age or grade. The safest move is a quick level diagnostic before you register for either.
Not sure which exam fits? A 32-question adaptive test places you on the CEFR scale in 10 minutes—no registration.
Check your level →Quick comparison
| KET | PET | |
|---|---|---|
| Full name | Key English Test | Preliminary English Test |
| CEFR level | A2 | B1 |
| Rough IELTS | ~3.0–3.5 | ~4.0–5.0 |
| Best for | Building a foundation | Independent everyday use |
What KET covers
KET confirms basic English. A pass means the learner can understand simple notices, exchange information on familiar topics, and write short notes. It is the first rung of the Cambridge ladder and a common milestone for upper-primary students.
What PET adds
PET expects independent use of English. Compared with KET, it asks for:
- Longer, more varied reading texts;
- A wider vocabulary across everyday and semi-formal contexts;
- Speaking that flows on familiar topics without long pauses.
Which one should you take?
- If diagnostics show A2 ability, start with KET to secure a confidence-building pass.
- If you are already operating at B1, skip KET and register for PET directly.
- If you are between the two, diagnose the weak skill (often speaking or listening) and target it before deciding.
Common questions
Do I have to pass KET before PET?
No. They are independent exams. Ability, not order, should decide. A diagnostic removes the guesswork.
Is one more "useful" than the other?
For older learners and practical use, B1 (PET) opens more doors. For young children, KET is the age-appropriate starting point. Use the level, not the label, to guide the choice.