Can You Get NDT Certified Online?

By Anoop Rayavarapu, ASNT NDT Level III · Published September 29, 2026

Why "NDT certified online" is a misleading promise

Search for "NDT certification online" and you will find courses that promise a certificate at the end. Read the small print. What they issue is a certificate of training completion: evidence that you attended a number of classroom hours in a method. That is useful, and it counts toward certification, but it is not certification.

In the US, SNT-TC-1A puts certification in the hands of the employer. Each employer writes a written practice, a document that sets its own requirements within the framework of SNT-TC-1A, and certifies its own personnel against it. The employer's Level III (in-house or outsourced) administers the examinations, and the employer signs the certification. When you change employers, your new employer certifies you again under its own written practice, although it can take your training and experience records into account.

Nothing in that process can be completed by a website on its own. The experience hours are spent doing supervised NDT work. The practical exam is performed with real equipment on real specimens, observed and graded under the employer's programme. A course that tells you otherwise is either selling a training certificate under a bigger name, or selling a certification no serious employer will accept.

What you can do online, and what you cannot

The training-hour and experience figures behind each method and level are set out in our NDT training requirements matrix. Your employer's written practice may require more than the SNT-TC-1A minimums, never less.

What about ASNT's own certifications?

ASNT also runs central certification programmes, where ASNT, not your employer, issues the certificate. Even these are not fully online:

• ASNT NDT Level II (meets SNT-TC-1A): computer-based General and Specific exams taken at a Pearson VUE or authorised test centre. The employer still performs the vision, practical and any job-specific exams. See our ASNT NDT Level II exam prep page.
• ASNT NDT Level III: a Basic exam plus at least one method exam, all computer-based and taken at a test centre, after meeting ASNT's education and experience requirements. See Level III Basic exam prep.
• ASNT 9712 (built to ISO 9712, replaced ACCP): includes practical exams at ASNT authorised exam centres.

In every case the preparation can be online. The proctored exams, the experience and the practical cannot.

How long does it take?

The online part is the fast part. Level I and II theory for a surface method such as MT or PT can be finished in days. UT and RT theory takes longer, spread over a few weeks for someone who is also working. The experience hours set the real calendar. For UT and RT they are measured in months of supervised work, which is why employers, not individuals, usually drive certification. A trainee is hired, trained, gains experience on the job, and is examined and certified by the employer. Our guide to becoming an NDT technician walks through the sequence.

How Atlantis does it: online theory, onsite practical

Atlantis NDT is built around the honest version of online NDT training. It works because we split the process at exactly the line the table above draws.

1. Live online theory. Level I and II theory for UT, RT, MT, PT, VT and ET, taught live online by an ASNT Level III, with recorded replays. The hours are documented so they can be counted under your employer's written practice. See online NDT training.
2. Practice on the Practical NDT simulator. Between sessions, trainees practise on Practical NDT, the first-ever online practical NDT simulation portal: 12 methods in 5 virtual environments (an NDT lab, a welding workshop, an aircraft hangar, an oil and gas site and a storage tank). It builds familiarity with setup, scanning and interpretation before trainees touch real equipment. It is practice. It does not replace the practical exam.
3. Onsite practical training and examination at the employer's facility. The hands-on part is delivered where the work happens, on the employer's equipment and specimens, under an ASNT Level III, and the practical exam is administered and graded to the written practice. Atlantis has no public classroom, so the practical comes to you.
4. Written exams and Level III administration. We prepare and grade general and specific exams to the employer's written practice, or support the employer's own Level III in doing so.
5. Written practice support. If the employer does not yet have a compliant written practice, we can develop or review one, because without it there is nothing to certify against.

For technicians aiming higher, our Level III programme runs fully online, because the ASNT Level III exams are written. The method pages cover each exam: UT, RT, MT, PT, VT and ET.

Want to see how it would work for you or your crew? Ask how online theory and onsite practical fit your situation.

A realistic route: from online theory to certified Level II

Here is how the process usually runs for a new UT technician hired by an inspection company that uses online theory. In the first weeks, the trainee completes Level I theory live online, practises calibration and scanning on the simulator, and starts supervised work alongside a certified Level II, logging experience from day one. The employer's Level III, in-house or outsourced, runs the Level I written exams and a practical on real calibration blocks and weld specimens, and the employer certifies the trainee as Level I. The technician then works as a Level I, performing examinations to procedures under Level II guidance, while completing Level II theory online in evenings or between jobs. Once the Level II experience total in the written practice is reached, the Level II general, specific and practical exams follow, and the employer certifies the technician as Level II.

Online delivery shortened the classroom part and removed the travel. It did not shorten the experience, and it did not move the practical off the shop floor. Any plan that promises otherwise should make you cautious.

How to judge an online NDT course before paying

• Does it say "certification" or "certificate of training"? An honest provider is precise about which one it issues.
• Who teaches it? Look for an ASNT Level III in the method, named on the page.
• Are the hours documented per method and level, in a form your employer's written practice can accept?
• How is the practical handled? If the answer is "it isn't", you will be paying again later.
• Does it build to SNT-TC-1A and CP-105 topical outlines, the framework US employers use?
• Is it live or recorded only? Recorded courses suit refreshers. Live sessions suit first-time learners who need questions answered.

Our article on online versus in-person NDT training goes further into the trade-offs, and what an NDT school can and cannot do covers the institutional side.

If you are an employer

Online theory changes the economics of certifying a crew. Technicians keep working while they complete the classroom hours from a site office, and the practical is run onsite in a concentrated block on your own equipment. Your written practice needs to allow online formal training and describe how the hours are recorded. We can check that for you. Talk to us about corporate NDT training, request a blended programme quote, or send details through the training enquiry form.