Master Black Belt Certification MBB

Master Black Belt Certification MBB

Process: Learn > Portfolio > Prepare > Apply > Certify > Recertify

The ASQ Master Black Belt (MBB) certification is a mark of career excellence and aimed at individuals who possess exceptional expertise and knowledge of current industry practice. Master black belts have outstanding leadership ability, are innovative, and demonstrate a strong commitment to the practice and advancement of quality and improvement. Obtaining an ASQ MBB is acceptance and recognition from your peers.

The target audience for the ASQ MBB certification are candidates who are or have been employed as MBBs within their organization, or well qualified certified Six Sigma Black Belts (CSSBB) who have substantial experience in each of the major topic areas within the portfolio.

Download the Master Black Belt Certification Brochure (PDF, 3.13 MB).

Download the Master Black Belt Certification Fact Sheet (PDF, 62 KB).

ASQ Master Black Belt

ASQ Members $545 for portfolio review, $2,124 for exam (save $210)

Non-members $650 for portfolio review, $2,229 for exam

Retakes $2,074

Download the Master Black Belt portfolio (PDF, 45 KB)

Price includes $70 non-refundable fee.

ASQ Certification Prep Resources

The Certified Six Sigma Master Black Belt Handbook


Portfolio Review

Once a candidate has met the minimum eligibility requirements, the next step in the process is a portfolio review of the candidate's body of SSBB or MBB work.

Note: Six Sigma Green Belt level work will not be considered.

When the review panel approves a candidate's portfolio, the candidate will be eligible to register for and take the MBB examination. Only after successfully completing all requirements and passing the examination will candidates receive MBB certification.

Download the Master Black Belt Portfolio Review Application (PDF, 266 KB).

Candidates must meet the minimum scoring requirements for each of the three key performance indicators.

  • Teaching, Coaching, Mentoring
  • Occupational Experience & Responsibility
  • Technical Experience/Innovation

The portfolio evaluation process will be conducted by a panel of subject matter experts who are Master Black Belts. This panel will operate independently but under the guidance of ASQ. The panel will have ultimate responsibility for judging the quality and appropriateness of the material and evidence presented in the portfolio.

Candidates who meet the required minimums for each section of the portfolio will receive an approval letter from the review panel stating that they are eligible to take the MBB examination.

Candidates who do not achieve the necessary points will receive feedback from the review panel. This feedback will include information about why the application failed.


Here are the minimum expectations, requirements and experience specifics for the Master Black Belt Certification.

Work Experience

To become certified as an ASQ MBB, a candidate must successfully meet all requirements. To be eligible to apply for the MBB examination, a candidate must hold a current ASQ Six Sigma Black Belt certification (CSSBB) and pass the MBB portfolio review process. Within the portfolio, a candidate must have one of the following experience levels:

1) At least 5 years of experience in the role of a SSBB or MBB.
2) Completion of 10 Six Sigma Black Belt projects.

Candidates must be able to meet these minimum eligibility requirements in order to have their portfolio reviewed

Body of Knowledge

The topics in this Body of Knowledge (BOK) include descriptive details (subtext) that will be used by the Exam Development Committee as guidelines for writing test questions. This subtext is also designed to help candidates prepare for the exam by identifying specific content within each topic that may be tested.

The subtext is not intended to limit the subject matter or be all-inclusive of what might be covered in an exam, but is intended to clarify how the topics relate to a Master Black Belt role. The descriptor in parentheses at the end of each entry refers to the maximum cognitive level at which the topic will be tested. A complete description of cognitive levels is provided at the end of the document.

Download the Master Black Belt Body of Knowledge

Prepare for the exam

Review a list of references that provide the basis for the exam questions. These items give you a better idea of the material covered in the exam.


The Master Black Belt certification is an exam that consists of 110 multiple choice items and a performance-based assessment that measures comprehension of the MBB Body of Knowledge. 100 of the multiple choice questions are scored and 10 are unscored. The performance-based portion of the exam includes situation specific materials that candidates will be directed to evaluate and respond to. It is offered in English. Total appointment time is five-and-a-half-hours, exam time is 5 hours and 18 minutes.

Examinations are conducted twice a year (July and November) and are delivered via computer based testing (CBT) through ASQ's testing partner Prometric. Each participant must bring his or her own reference materials. Use of reference materials and calculators is explained in the FAQs.



To maintain the integrity of your Master Black Belt certification, ASQ requires that you recertify every three years. Find out the steps you need to take for recertification.



ASQ will accept Portfolio's for the MBB on an ongoing basis. However there are strict deadlines for submission of the portfolio in relation to the exam time table. Candidates who do not submit before the portfolio deadline will automatically be eligible (upon successfully passing the portfolio) for the next scheduled exam.

Once your portfolio has been reviewed and approved by the MBB panel, you will receive an email from ASQ authorizing you to apply for the Master Black Belt exam.


ASQ certification examinations are delivered by ASQ's testing partner, Prometric. The examination scheduling instructions in your eligibility letter will direct you to a section of Prometric's website, where you can select and schedule your examination date and location. The Master Black Belt (MBB) is offered in July and November each year.

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