Fillet Gauge
Start CWI Part BStart
Free diagnosticsCWI Part ACWI Part BCWI Part C D1.1CoursesCWI Part A courseCWI Part B courseCWI Part C D1.1 courseGuidesCWI Part A: 165 questions, closed book, 10 domainsCWI Part C with D1.1: on-screen PDF, no word searchWhat the CWI exam costs in 2026: fees, retests and seminarsCWI retest rules: which parts, how many times, and what AWS asks forHow to become a CWI: eligibility, timeline and total costD1.1 for CWI Part C: edition and on-screen codeFree toolsCWI seminar and exam dates by city, 2026-27Welding symbols quiz: read the symbol, name the weldFillet weld calculator: leg, throat, area and weld metal weightFillet GaugeAbout and editorial policy

Free 25-question diagnostic · no signup

Free CWI Part B practice test

Practice CWI Part B practical questions with 25 original questions in about 65 minutes. Part B is open book, so keep the free AWS Book of Specifications open as you work. See your score by published outline domain.

Get the free Part B Book of Specifications from AWS

Start the free diagnostic
  • 25 questions
  • About 65 minutes
  • Scored by domain

Full CWI Part B course: $99, available now. See what's inside →

Exam at a glance

Format
46 questions in 120 minutesBook: open (AWS Part B Book of Specifications, provided at testing; also a free PDF)
Delivery
Paper-based practical exam at an AWS test site, taken before Parts A and C
Fee
Initial CAWI/CWI exams (all three parts): $1,255 member / $1,520 non-member. Initial exams + Part B Training: $2,000 / $2,265. Paper/email application surcharge $125. The initial fee covers all three parts.
Retakes
Max 3 retests in the 3 years from the original test date; first retest needs no extra training; 2nd and 3rd need documented training: 40 h if retesting all parts, 16 h for 1-2 parts. Retest fees: Part A or C $445; A and C $870; Part B $385; all parts $915 member / $1,180 non-member.

What it covers

Welding Inspection and Discontinuities34%
Procedure and Performance Qualifications28%
Destructive Testing and Properties8%
NDE Application8%
Utilization of Specifications and Drawings8%

Diagnostic questions follow these domains, subject to the available practice questions.

Original practice questions written to the published content outline. Never real or recalled exam questions.

How it works

  1. Answer

    25 questions on a timer. Skip any you don't know.

  2. See your score

    Blueprint-weighted, broken down by domain, with your weakest one named.

  3. Study smarter

    Add your email and exam date to unlock the answer review and a study plan.

The CWI Part B course

Available now · instant access

Learn the tool kit, the specification and the qualification records, then practice.

  • 7modules of lessonsEvery task on the outline
  • 2full-length timed exams46 questions in 120 minutes each
  • 120practice questionsEach one explained
  • 2worked calculationsStep by step
  • 1week-by-week study planSet to your exam date
See all 7 modules
  1. Measuring welds with the inspection tool kit
  2. Judging replicas against acceptance criteria
  3. Reviewing a WPS against its PQR
  4. Checking welder qualification records
  5. Bend specimens and test results
  6. NDE in the exhibits booklet
  7. Finding your way in the Book of Specifications

Question bank and timed exams: Expert-reviewed: every question was checked by a CWI with 15 years in structural welding (2026-10-19). Every answer key is confirmed by a separate blind solve, and reported errors are fixed within 2 business days.

Practice test FAQ

How long is the free diagnostic?

The free diagnostic has 25 questions and takes about 65 minutes. It is a short study check, rather than a full-length exam simulation.

Is this a free CWI practice test for every part?

Choose Part A for fundamentals, Part B for the practical or Part C for D1.1 code application. Each has its own diagnostic and outline. Part B questions assume you have the Book of Specifications open, as you will on exam day. This site does not offer a Part C diagnostic for other codes.

Is the diagnostic free?

Yes. You can start the diagnostic and see your score and domain breakdown for free, with no signup or payment.

Where does the practice content come from?

These are original practice questions written to the published outline. We never use real or recalled exam items. Treat the results as a starting point for study.

How is the diagnostic scored?

Practice items are grouped by the published outline's domains, subject to available questions. The diagnostic weights domain results using the configured published outline weights. This practice percentage helps set study priorities; it does not predict your exam score or certification outcome.

What do I see after finishing?

You see your overall practice score, a domain breakdown and your weakest domain. Use those results alongside the published outline to choose topics to revisit.

How should I use the result to study?

Review the domains where you struggled, compare them with the published outline and return to your study references. A short diagnostic samples only part of the content; completing it does not establish exam readiness.

  1. 01Free CWI Part B diagnostic25 questions, about 65 minutes. See your weakest domain.Start free
  2. 02Part B course$99. Lessons, timed practice exams and a plan around your exam date.See the plans

Sitting a different exam? Try the CWI Part A or CWI Part C D1.1 diagnostic.