Pass CWI Parts A and C the first time.

Exam-style questions for Part A Fundamentals and Part C (D1.1:2020) code application, every answer explained, plus an AI tutor for the ones you get wrong.

New to the CWI? Start with Part A.

25 questions, untimedNo account neededScore for each domain

Try a sample questionDefinitions and Terminology
For an equal-leg fillet weld, the fillet weld size is defined as the leg lengths of which figure?
Fillet weld symbol: an arrow, a reference line, a fillet triangle below the line for the arrow side, and the size 1/4 to the left of the triangle. 1/4 Reference line Arrow Fillet Size
A fillet weld symbol (AWS A2.4). The triangle under the reference line means the weld goes on the arrow side, and the 1/4 to its left is the weld size in inches.

Checked by someone who does the job

Mark J. Curry
Mark J. Curry

AWS CWI

Certified Welding Inspector. Reviews every question and explanation before it goes live.

About the reviewer and their credential
Money-back guarantee

Pass Parts A and C or get a full refund (full course).

Independent of AWS

We are not affiliated with AWS and never see real exam questions. Every question is written from AWS's public content outline and the standards it names, so nothing here is a leaked or recalled item. How we write questions

  • Written to AWS's current content outlineAll 15 domains, weighted the way the real exam weights them.
  • 378 exam-style questionsEach one explains the right answer and why every wrong answer is wrong.
  • Every explanation names its sourceMost cited: AWS D1.1 (167), AWS A3.0 (41), AWS A2.4 (28), AWS B1.10 (22), ASME BPVC Section IX (17). Number of questions in brackets.
  • An AI tutor for what you missAsk a follow-up question in plain words. Its answers are written by AI, so check them against the explanation.

Know which domain to study first

The free test scores every domain against the ready line, so you can see where the points are.

  • Weakest first. Domains are ranked by the points they would cost you on the real CWI.
  • Practice what you miss. Short sets show the answer right away, and missed questions come back for review.
  • Book when you hit the line. Score 72% or more on full timed mocks.
What you see after 25 questions

An example, not a real score. Your own results rank every domain like this.

  • Definitions and Terminology40%

    Start here: your weakest domain

  • Welding Processes65%

    Close: about 7 points to go

  • Symbols: Welding and NDE85%

    Above the ready line

The dark tick is the 72% ready line.

What the questions look like

Sample questionWelding Processes
What does the '1' in E7018 indicate?

The CWI by domain

230 questions in 4 hours 30 minutes. Our questions follow AWS's current outline and its weights.

Part C: Code Application, AWS D1.1:2020 (open book)65 questions · 135 min

  1. 1 D1.1 Qualification 30%
  2. 2 D1.1 Fabrication 30%
  3. 3 D1.1 Inspection 30%
  4. 4 D1.1 Design, Materials and Records 10%
Pass, or your money back

Full course: if you don't pass Parts A and C, we refund you in full. Finish a practice set in every domain and two full mocks per part, take the exam within 12 months, then send your results within 30 days of your exam date.

See plans

Questions

Does this cover Part B?

Not yet. Part B is hands-on with replicas. We cover Part A (Fundamentals) and Part C (Code Application on D1.1).

Can my employer pay?

Yes. Checkout gives a receipt with your company name,.

Is the free mock exam really free?

Yes. No account and no card. You get your score, a breakdown by topic and an explanation for every question.

Do you include the code book?

No. AWS codes are copyrighted. Our Part C questions point you to clause numbers so you practice finding them in your own copy.