Practice for your dive certification exam with fresh questions and instant scoring — free to start. Pick your course and take a practice test today, in whichever language you think in.
No sign-up needed — answer 15 questions, get your score and a full explanation for every answer.
Every recreational scuba certification includes a written knowledge exam — the dive theory test — that you pass before you're certified. The Open Water Diver test is the first one most divers take: about 50 questions on dive physics, physiology, equipment, and dive planning, with a 75% pass mark. Later certifications — Rescue Diver, Divemaster, and the Instructor exams — build on that same theory and add their own specialties. A scuba practice test lets you rehearse the real thing, in the same style, so nothing on exam day is a surprise. New to the gas side of it? Start with what nitrox is and how it shows up on the exam.
Each course has unlimited practice exams and per-topic drills.
Yes. Every recreational scuba certification includes a written knowledge exam — often called the dive theory test — that you take after the knowledge-development lessons and must pass before you're certified. Our free practice tests rehearse it, level by level.
The core topics are dive physics (pressure, buoyancy, gas laws), physiology (how depth affects the body, decompression), equipment, the dive environment, and dive planning with tables and computers. Professional levels — Divemaster and Instructor — add supervision, standards, and deeper theory.
The Open Water Diver final exam is typically 50 questions — mostly multiple choice and true/false — and you need 75% to pass. Our practice exam mirrors that: a fresh 50-question set every attempt, scored the same way.
Yes — the 15-question quizzes on this page need no account and no payment. Answer the questions, get your score and a full explanation for every answer. Creating an account unlocks unlimited full-length practice exams and per-topic drills.
No. These are original practice questions written to mirror the real exam's topics and difficulty. You learn the concepts on unlimited fresh questions rather than memorizing a leaked answer key — which is what actually gets you through the real test.
Yes. The whole thing runs in your browser on any device, so you can drill on your phone between dives or on a laptop the night before your exam.
Create your account to unlock full-length exams and every-topic drills.
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