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10 Best Quality Control Certifications of 2026
This list is for QA/QC inspectors and technicians in manufacturing and construction deciding which certification to earn first or next. We compared documented eligibility rules, exam formats and published fees for ten credentials from ASQ, AWS, API, ACI and ICC. Scores weigh features at 40 percent and ease of use and value at 30 percent each. Fees are non-member prices taken from each certifier's own pages in November 2026.
By the Mojolin research desk · Updated November 11, 2026 · 10 tools compared · Prices checked on vendor pages, latest November 11, 2026
Questions or corrections: editorial@mojolin.com
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Most manufacturing QC inspectors should start with the ASQ CQI: it needs the least experience of the ASQ exams, costs $460 and covers inspection, measurement and sampling. Inspectors who check welds in construction or fabrication should earn the AWS CWI, which is valid for nine years. Technicians who run SPC fit the CQT, and anyone with 8 years in quality (or 4 with a bachelor's) should aim for the CQE, CQA or, on construction projects, the CCQM. Concrete technicians should start with ACI Field Testing Technician Grade I and build toward ICC special inspector categories, while refinery inspectors need API 510.
Top picks
Best overall
ASQ Certified Quality Inspector (CQI)
9.0 / 10
QC inspectors in manufacturing plants
Read the review →Runner-up
AWS Certified Welding Inspector (CWI)
8.5 / 10
QA/QC inspectors on welded steel in construction and fabrication
Read the review →Also great
ASQ Certified Quality Technician (CQT)
8.4 / 10
Quality technicians who handle SPC and data analysis
Read the review →Comparison table
| # | Tool | Pricing | Score | |
|---|---|---|---|---|
| 1 | ASQ Certified Quality Inspector (CQI) | QC inspectors in manufacturing plants | $460 exam fee ($100 off for ASQ members); retakes $260 | 9.0 |
| 2 | AWS Certified Welding Inspector (CWI) | QA/QC inspectors on welded steel in construction and fabrication | Initial CAWI/CWI exams $1,520 for non-members, $1,255 for AWS members; $2,265 with Part B training | 8.5 |
| 3 | ASQ Certified Quality Technician (CQT) | Quality technicians who handle SPC and data analysis | $460 exam fee ($100 off for ASQ members); retakes $260 | 8.4 |
| 4 | ASQ Certified Quality Engineer (CQE) | Experienced QC staff moving into quality engineering | $550 exam fee ($100 off for ASQ members); retakes $350 | 8.3 |
| 5 | ASQ Certified Construction Quality Manager (CCQM) | Construction QA/QC managers on building and infrastructure projects | $550 exam fee ($100 off for ASQ members); retakes $350 | 8.1 |
| 6 | ASQ Certified Quality Auditor (CQA) | Supplier quality and internal audit staff | $550 exam fee ($100 off for ASQ members); retakes $350 | 8.0 |
| 7 | ASQ Certified Six Sigma Green Belt (CSSGB) | QC staff who lead defect reduction projects | $483 exam fee ($100 off for ASQ members); retakes $283 | 7.9 |
| 8 |  API 510 Pressure Vessel Inspector | Inspectors at refineries, chemical plants and inspection agencies | $1,125 initial certification for non-members, $875 for API members | 7.8 |
| 9 |  ACI Concrete Field Testing Technician Grade I | Construction QC technicians testing concrete on site | See vendor pricing (USD check pending); fees are set by local ACI sponsoring groups | 7.7 |
| 10 |  ICC Reinforced Concrete Special Inspector | Construction inspectors doing IBC Chapter 17 special inspections | See vendor pricing (USD check pending); exams are sold through the ICC exam catalog | 7.5 |
Scoring weights
Every tool gets three editorial scores out of 10, from vendor documentation, product pages and the published price. The overall score is the weighted average below, the same method on every list. Full method
The full ranking
Rank 1 · Best overall
ASQ Certified Quality Inspector (CQI)
ASQ's certification for inspectors who measure parts, apply sampling plans and judge conformance to specifications.
asq.org9.0
out of 10
Best for: QC inspectors in manufacturing plants
The Certified Quality Inspector is ASQ's credential aimed squarely at the people on the shop floor and in receiving inspection who check parts against drawings and specifications. Candidates need three years of full-time, paid work in areas of the CQI Body of Knowledge, but any diploma from a technical, military or trade school, or any college degree, waives two of those years. The computer-delivered exam has 110 multiple-choice questions, 100 of them scored, with 4 hours 18 minutes of exam time, and it is open book: ASQ notes that its CQI Handbook can be used in the exam room. The fee is $460, ASQ members save $100 on the first attempt, and a retake costs $260. Testing runs in monthly windows at Prometric centers, and the exam is in English only. For inspectors who want one recognized quality credential without the eight-year experience bar of the CQE or CQA, this is the most direct route we compared.
Standout feature
ASQ CQI is the best choice for manufacturing QC inspectors because ASQ asks for just 3 years of experience, cut to 1 year with any diploma, and charges $460 for an open-book exam.
Use cases
Receiving and in-process inspectors
Earn a recognized credential for measurement and sampling skills
Outcome: An ASQ certification after one open-book exam
Trade school graduates with 1 year on the job
Use the diploma waiver to qualify early
Outcome: Certification years before the CQE experience bar
Key features
- 110-question computer-delivered exam, 100 scored, with 4 hours 18 minutes of exam time
- Open-book exam, and ASQ says the CQI Handbook can be used during it
- 3 years of full-time, paid experience in the CQI Body of Knowledge
- Any diploma or degree waives 2 of the 3 required years
- Monthly computer-based testing windows through Prometric
Pros
- Lowest ASQ exam fee on this list at $460, or $360 for members
- A trade school diploma or any degree cuts the experience requirement to 1 year
- Covers the inspection, measurement and sampling work that QC inspectors do daily
Cons
- Requires 3 years of paid experience without a diploma or degree
- Offered in English only
- Retakes cost $260 each
Rank 2 · Runner-up
AWS Certified Welding Inspector (CWI)
The American Welding Society's credential for inspectors who verify welds against codes in fabrication and construction.
aws.org8.5
out of 10
Best for: QA/QC inspectors on welded steel in construction and fabrication
The Certified Welding Inspector is the credential most construction and fabrication QC roles ask for when the work involves structural or pressure welds. AWS splits the exam into three parts: Part A covers fundamentals in 150 questions, Part B is a practical with AWS-supplied equipment and 46 questions on tasks such as applying WPSs and PQRs, and Part C is an open-book test on the code book. Parts A and C are computer based at more than 450 Prometric centers, while Part B runs at AWS seminar sites. Eligibility depends on education: a bachelor's in welding engineering needs one year of welding work, a high school diploma needs five, and candidates must pass a vision test. AWS's 2026 price list shows $1,520 for the initial exams for non-members and $1,255 for members, or $2,265 with Part B training. The certification lasts nine years, with renewal applications at years three and six. It costs more than any ASQ exam here, but no other option is as specific to weld inspection.
Standout feature
AWS CWI is the best choice for weld inspectors because AWS tests fundamentals, practical skills and code book use, and the credential lasts nine years.
Use cases
Structural steel QC inspectors
Inspect field and shop welds to a code
Outcome: A nine-year AWS credential that clients and owners recognize
Welders with 5 years on the job
Move from welding into inspection
Outcome: A path to inspector roles with a high school diploma
Key features
- Three exams: Part A Fundamentals (150 questions), Part B Practical and Part C open-book Code Book
- Parts A and C run by computer at more than 450 Prometric centers
- Part B uses AWS-provided equipment and 46 questions on hands-on activities
- Valid for nine years with renewal applications at years three and six
- Requires a vision test plus documented welding work experience
Pros
- Covers welding symbols, NDT, metallurgy and WPS/PQR review in one credential
- A high school diploma plus 5 years of welding work qualifies
- Reciprocity path for Canadian CWB and Israeli INWC inspectors
Cons
- Most expensive initial exam on this list at $1,520 for non-members
- Part B practical is only held at AWS seminar locations
- Needs at least 5 years of welding work with a high school diploma
Rank 3 · Also great
ASQ Certified Quality Technician (CQT)
ASQ's certification for technicians who analyze quality data, run statistical tools and support quality engineers.
asq.org8.4
out of 10
Best for: Quality technicians who handle SPC and data analysis
The Certified Quality Technician sits between the inspector and engineer credentials at ASQ. It targets people who work under quality engineers: collecting and analyzing data, running statistical process control and helping with audits and problem solving. Candidates need four years of full-time, paid experience, with waivers of one year for a quality technology certificate from a community college or vocational school, two years for an associate degree and three years for a bachelor's or higher. The computer-delivered exam has 110 questions with 100 scored and 4 hours 18 minutes of exam time, and it is open book. ASQ charges $460, takes $100 off for members on the first attempt and charges $260 for a retake. Inspectors whose daily work is mostly measuring and accepting product will get more from the CQI, but technicians who own SPC charts and capability studies will find the CQT body of knowledge closer to their job.
Standout feature
ASQ CQT is the best choice for quality technicians because ASQ prices it at $460 and waives 3 of the 4 experience years for a bachelor's degree.
Use cases
Lab and SPC technicians
Certify statistical and data skills
Outcome: An ASQ credential matched to technician work
Community college quality technology graduates
Apply a 1-year education waiver
Outcome: Eligibility after 3 years of work
Key features
- 110-question computer-delivered exam with 4 hours 18 minutes of exam time
- Open book, bring your own references
- 4 years of full-time, paid experience in the CQT Body of Knowledge
- A bachelor's or higher degree waives 3 of the 4 years
- Experience from other ASQ certifications such as CQE or CQA counts
Pros
- Same $460 fee as the CQI
- A quality technology certificate from a community college waives 1 year
- Good stepping stone toward the CQE
Cons
- Needs 4 years of experience before waivers, one more than the CQI
- English only
- Overlaps with the CQI for pure inspection roles
Rank 4
ASQ Certified Quality Engineer (CQE)
ASQ's senior engineering credential covering quality systems, product and process design, statistics and reliability.
asq.org8.3
out of 10
Best for: Experienced QC staff moving into quality engineering
The Certified Quality Engineer is the credential most often listed for quality engineer and senior QA roles, and it is the natural next step for an inspector or technician who wants to design inspection plans rather than execute them. The bar is high: eight years of full-time, paid experience, three of them in a decision-making position, though a bachelor's degree waives four years and a master's or doctorate waives five. The exam has 175 multiple-choice questions, 160 scored, with 5 hours 18 minutes of exam time, and is offered in English plus bilingual German, Spanish, Mandarin, Polish, Czech and Slovak forms. ASQ charges $550, $450 for members on the first attempt, and $350 for a retake. Its own prep catalog lists a $150 handbook, a $119 question bank, an $824 e-learning course and a $1,299 live virtual course. For entry-level inspectors it is too early, but for experienced QC leads it carries more weight than the CQI or CQT.
Standout feature
ASQ CQE is the best choice for inspectors moving into quality engineering because ASQ tests 160 scored questions across the full quality engineering body of knowledge for $550.
Use cases
QC leads with an engineering degree
Qualify for quality engineer roles
Outcome: A senior ASQ credential after 4 years of work
Bilingual plant staff
Take the exam in a bilingual form
Outcome: Exam text shown in Spanish, German or another listed language
Key features
- 175-question exam, 160 scored, with 5 hours 18 minutes of exam time
- Bilingual forms in German, Spanish, Mandarin, Polish, Czech and Slovak
- 8 years of experience, 3 of them in a decision-making position
- A bachelor's degree waives 4 years, a master's or doctorate 5
- ASQ sells a $1,299 live virtual prep course and a $119 question bank
Pros
- Broadest body of knowledge of any ASQ option here
- Bilingual exam forms help non-native English speakers
- Open-book exam
Cons
- 8-year experience bar is the highest on this list
- Exam time of over 5 hours
- Prep materials add cost: the e-learning course lists at $824
Rank 5
ASQ Certified Construction Quality Manager (CCQM)
ASQ's certification for people who manage quality programs on construction projects.
asq.org8.1
out of 10
Best for: Construction QA/QC managers on building and infrastructure projects
ASQ's Certified Construction Quality Manager fills a gap that the factory-focused ASQ credentials leave open: running a quality program on a construction job. Eligibility follows the senior ASQ model, with eight years of full-time, paid experience and three in a decision-making role, but ASQ lets candidates count up to one year from an internship or apprenticeship, which suits people who came up through the trades. Education waivers run from one year for a trade school diploma to five for a master's or doctorate. The computer-delivered exam has 165 questions, 150 of them scored, with 4 hours 18 minutes of exam time, and it is open book and English only. The fee is $550, with $100 off for members and $350 for a retake. Field inspectors checking concrete or welds will get more day-to-day use from the ACI, ICC or AWS credentials on this list, but a QA/QC manager who writes the project quality plan and manages inspection staff is the audience ASQ built this for.
Standout feature
ASQ CCQM is the best choice for construction QA/QC managers because it is the only ASQ exam built for construction and costs $550.
Use cases
Contractor QA/QC managers
Show competence in running a project quality program
Outcome: An ASQ credential specific to construction
Former tradespeople moving into quality roles
Count apprenticeship time toward eligibility
Outcome: Up to 1 year of experience credit
Key features
- 165-question exam, 150 scored, with 4 hours 18 minutes of exam time
- Open book, English only
- 8 years of experience, 3 in a decision-making position
- Up to 1 year can come from an internship or apprenticeship
- Bachelor's degree waives 4 years, master's or doctorate 5
Pros
- The only ASQ credential here built for construction quality
- Apprenticeship time can count toward experience
- Same $550 fee as the CQE and CQA
Cons
- 8-year experience requirement before waivers
- Aimed at managers rather than field inspectors
- English only
Rank 6
ASQ Certified Quality Auditor (CQA)
ASQ's certification for auditors who evaluate quality systems against standards such as ISO 9001.
asq.org8.0
out of 10
Best for: Supplier quality and internal audit staff
The Certified Quality Auditor is the ASQ credential for people who audit systems rather than parts: internal auditors, supplier quality engineers and anyone preparing a plant for an ISO 9001 or customer audit. It uses the same eligibility rule as the CQE, with eight years of full-time, paid experience and three in a decision-making position, and the same education waivers of one to five years. The computer exam has 165 questions with 150 scored and 4 hours 18 minutes of exam time, and a paper version has 150 questions over five hours; both are open book and English only. ASQ lists the fee at $550, $450 for members on the first try, with $350 retakes. For a QC inspector whose role is shifting toward supplier audits or the internal audit program, the CQA is the stronger signal than a short lead auditor course, though it takes longer to qualify for.
Standout feature
ASQ CQA is the best choice for supplier and internal auditors because ASQ covers audit practice in a $550 open-book exam.
Use cases
Supplier quality engineers
Audit vendors against quality requirements
Outcome: An ASQ audit credential customers recognize
Internal audit coordinators
Run the plant's ISO 9001 internal audit program
Outcome: A credential matched to audit work
Key features
- 165-question exam, 150 scored, with 4 hours 18 minutes of exam time
- Open book, English only
- 8 years of experience, 3 in a decision-making position
- Bachelor's degree waives 4 years
- Paper and pencil option with 150 questions in 5 hours
Pros
- Recognized vendor-neutral audit credential from ASQ
- Fits supplier audits as well as internal ISO 9001 audits
- Same fee as the CQE
Cons
- 8-year experience bar
- Less useful for hands-on product inspection
- English only
Rank 7
ASQ Certified Six Sigma Green Belt (CSSGB)
ASQ's Six Sigma credential for people who join or lead improvement projects using DMAIC.
asq.org7.9
out of 10
Best for: QC staff who lead defect reduction projects
The Certified Six Sigma Green Belt is not an inspection credential, but it appears in many QC job postings because inspectors and technicians are often asked to run root cause and defect reduction projects. ASQ requires three years of full-time, paid experience in the Green Belt body of knowledge and, unlike its other exams, grants no education waivers. The computer-delivered exam has 110 questions, 100 scored, with 4 hours 18 minutes of exam time, and it is open book; a paper version is offered in Mandarin at certain locations. The fee is $483 with $100 off for members and $283 for a retake. Many companies run their own belt programs, and ASQ's version has the advantage of being vendor neutral. For someone whose main job is measuring and accepting product, the CQI is the better first choice; the Green Belt makes sense as a second credential once you own corrective action work.
Standout feature
ASQ CSSGB is the best choice for QC staff who run defect reduction projects because ASQ's exam is vendor neutral and costs $483.
Use cases
QC inspectors handling nonconformances
Lead DMAIC projects to cut defect rates
Outcome: A vendor-neutral Six Sigma credential
Quality technicians
Add improvement skills to SPC work
Outcome: A second ASQ credential at $483
Key features
- 110-question exam with 4 hours 18 minutes of exam time
- Open book
- 3 years of full-time, paid experience
- No educational waivers
- Paper exam offered in Mandarin in certain locations
Pros
- Shorter experience bar than the CQE or CQA
- Vendor-neutral, unlike many company-run belt programs
- Useful for inspectors who also own corrective actions
Cons
- Education does not reduce the 3-year requirement
- Focused on improvement projects, not inspection methods
- Computer exam is English only
Rank 8
API 510 Pressure Vessel Inspector
The American Petroleum Institute's certification for in-service inspection of pressure vessels.
api.org7.8
out of 10
Best for: Inspectors at refineries, chemical plants and inspection agencies
API 510 is a narrow but valuable certification: it qualifies inspectors to examine, repair and alter in-service pressure vessels under API's inspection code, and it is a common requirement at refineries and petrochemical plants. Eligibility depends on education and pressure vessel experience gained within the last ten years while working for or under contract with an authorized inspection agency. A bachelor's in engineering or technology needs one year of inspection experience, a two-year associate degree needs two years, and a high school diploma needs three. API's fee schedule lists $1,125 for non-members and $875 for members. The certification is accredited by ANSI to ISO 17024, lasts three years, and recertification requires proof that at least 20 percent of the period was spent performing or supervising pressure vessel inspection. The exam is in person only. Outside oil, gas and chemicals it carries little weight, which is why it ranks below the broader ASQ options here.
Standout feature
API 510 is the best choice for refinery pressure vessel inspectors because it is ANSI accredited and a bachelor's in engineering needs only 1 year of inspection experience.
Use cases
Refinery inspection staff
Inspect and approve repairs on in-service vessels
Outcome: An ANSI-accredited API credential
Engineers at inspection agencies
Qualify after 1 year of vessel inspection work
Outcome: Eligibility to inspect under the API 510 code
Key features
- Accredited by ANSI under ISO 17024
- Valid for a three-year term
- Experience must be gained within the last 10 years with an authorized inspection agency
- BS in engineering needs 1 year of experience, a high school diploma 3 years
- Recertification requires 20% of time spent on pressure vessel inspection
Pros
- Required or preferred for pressure vessel inspection roles in refining
- ANSI accreditation
- Clear experience table by education level
Cons
- $1,125 non-member fee, second highest here
- Exam is in person at test centers only
- Recertify every 3 years with an active work requirement
Rank 9
ACI Concrete Field Testing Technician Grade I
The American Concrete Institute's entry certification for testing fresh concrete on construction sites.
concrete.org7.7
out of 10
Best for: Construction QC technicians testing concrete on site
ACI's Concrete Field Testing Technician Grade I is the entry credential for construction QC technicians who sample and test concrete as it arrives on site. ACI describes it as proof that a holder can perform and record seven basic field tests on freshly mixed concrete, covering ASTM methods such as slump, temperature, density and making test specimens. Candidates pass a one-hour, closed-book written exam of 55 multiple-choice questions, scoring at least 70 percent overall and 60 percent on each method, plus a performance exam in which they demonstrate six methods and describe the sampling practice. Certification lasts five years, and recertification requires passing both exams again. ACI runs the program through local sponsoring groups, so the program page does not list a single national fee. Its practical value goes beyond the site: ICC requires an active Grade I card for its Reinforced Concrete Special Inspector Categories 48 and 49.
Standout feature
ACI Grade I is the best choice for construction QC technicians because ACI tests seven fresh concrete methods in a hands-on performance exam and the card is valid for five years.
Use cases
New construction materials testing technicians
Test slump, air and temperature on concrete pours
Outcome: A five-year ACI card accepted on many projects
Technicians aiming for special inspection
Meet the Grade I prerequisite
Outcome: Eligibility for ICC Categories 48 and 49
Key features
- Covers seven basic field tests on freshly mixed concrete, including slump and temperature
- One-hour, closed-book written exam with 55 multiple-choice questions
- Performance exam demonstrating six test methods plus a verbal description of sampling
- Pass mark of 70% overall and at least 60% on each test method
- Certification valid for five years
Pros
- Written and performance exams cover ASTM methods used on every pour
- Hands-on performance exam matches daily field work
- Grade I is required for ICC Reinforced Concrete Special Inspector Categories 48 and 49
Cons
- Fees vary by local sponsoring group and are not listed on the program page
- Recertification means retaking both exams
- Covers fresh concrete testing only
Rank 10
ICC Reinforced Concrete Special Inspector
The International Code Council's modular special inspector certification for reinforced concrete work.
iccsafe.org7.5
out of 10
Best for: Construction inspectors doing IBC Chapter 17 special inspections
ICC's Reinforced Concrete Special Inspector certification is aimed at inspectors who check rebar placement, formwork and concrete work for building officials under Chapter 17 of the International Building Code. ICC now builds special inspector certifications from modules: Category 47 needs the General Requirements exam, the Reinforced Concrete Codes exam (47C) and the Plans exam (47P), and the GR module is skipped by anyone already holding an active ICC special inspector certification. From there, Category 48 adds an ACI Concrete Field Testing Technician Grade I card and Category 49 adds an ACI experience evaluation, which in turn is the prerequisite for the Prestressed Concrete Special Inspector. ICC is clear that the certification does not by itself make someone a special inspector; the local building official approves special inspectors. Exams are bought through the ICC exam catalog and the program page does not show fees, so we list pricing as pending. For field inspectors on commercial building projects it is the most code-specific option here.
Standout feature
ICC Reinforced Concrete Special Inspector is the best choice for IBC concrete special inspectors because its Codes and Plans modules test the exact documents used on site.
Use cases
Third-party special inspection firms
Staff reinforced concrete inspections on commercial buildings
Outcome: Inspectors with an ICC category building officials review
Holders of another ICC special inspector card
Add concrete without retaking GR
Outcome: Category 47 with two module exams
Key features
- Category 47 requires three modules: General Requirements (GR), Codes (47C) and Plans (47P)
- GR module is waived for holders of an active ICC Special Inspector certification
- Category 48 adds an ACI Field Testing Technician Grade I card
- Category 49 adds ACI experience evaluation
- Leads to Prestressed Concrete Special Inspector (Category 92)
Pros
- Modular exams let candidates add other special inspector categories later
- Clear upgrade path to Categories 48, 49 and 92
- Free PRONTO plans exercise for exam practice
Cons
- ICC states the certification alone does not qualify you as a special inspector; the building official decides
- Fees are not shown on the program page
- Top categories need ACI credentials as well
Frequently asked questions
+Which certification is best for quality control?
ASQ Certified Quality Inspector (CQI) is the best quality control certification for most inspectors. It requires 3 years of experience, or 1 year with any diploma or degree, and ASQ charges $460 for the open-book exam ($360 for members).
+Which QA/QC certification is best?
For manufacturing QA/QC, start with ASQ CQI or CQT and move to the CQE or CQA later; for construction QA/QC, AWS CWI for welds, ACI Grade I for concrete and ASQ CCQM for managers. The CQE and CQA need 8 years of experience, 4 with a bachelor's degree.
+How much does ASQ certification cost?
ASQ exam fees range from $460 for the CQI and CQT to $550 for the CQE, CQA and CCQM, with the Six Sigma Green Belt at $483. ASQ members save $100 on the first attempt, and retakes cost $260 to $350.
+Is the ASQ CQI exam open book?
Yes. ASQ says all its examinations are open book, and it notes that the CQI Handbook can be used during the exam. The computer-delivered CQI has 110 questions with 4 hours 18 minutes of exam time.
+How long does the AWS CWI certification last?
Nine years. AWS requires renewal applications at years three and six, and the initial exams cost $1,520 for non-members or $1,255 for members on AWS's 2026 price list.
+What certification do construction QC inspectors need?
It depends on the work: AWS CWI for welding, ACI Concrete Field Testing Technician Grade I for concrete testing and ICC special inspector categories for IBC special inspections. ASQ CCQM covers managers who run the overall project quality program.
+Can I get a quality inspector certification without a degree?
Yes. ASQ CQI requires 3 years of full-time, paid experience with no degree, and AWS CWI accepts a high school diploma with 5 years of welding work. ASQ CQT also accepts experience alone, with 4 years required.
About this list
Updated November 11, 2026 by the Mojolin research desk. Mojolin is self-funded
Questions or corrections: editorial@mojolin.com
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