Six Sigma Black Belt requirements
For the ASQ Certified Six Sigma Black Belt you need three years of on-the-job experience in one or more areas of the CSSBB Body of Knowledge, in a full-time, paid role, and completed Six Sigma project work documented with a signed affidavit. ASQ lists no degree and no mandatory course. Once ASQ approves your application, you pass the exam — 550 of 750 points — to be certified.
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Six Sigma certification: black belt requirements at a glance
ASQ’s six sigma black belt requirements come down to experience and evidence of project work. Both are checked before you can book the exam, which is what separates the CSSBB from a course certificate.
- Experience: three years on the job in one or more areas of the CSSBB Body of Knowledge
- Employment: the experience must come from a full-time, paid role
- Projects: one completed project with a signed affidavit, or two completed projects with signed affidavits
- Exam: pass the CSSBB exam with at least 550 of 750 points
Source: ASQ — Six Sigma Black Belt Certification. Checked 10 October 2026.
Experience: what counts
ASQ asks for three years in one or more areas of the Body of Knowledge, so the experience does not have to cover every section — but it must have been earned in a full-time, paid role. If your experience comes from anything other than full-time, paid employment, clarify it with ASQ before you apply.
Source: ASQ — Six Sigma Black Belt Certification. Checked 10 October 2026.
The project affidavit
The six sigma black belt certification requirements include real project work. ASQ states that the certification requires you to complete at least one Six Sigma project and submit a project affidavit, and its requirements list one completed project with a signed affidavit, or two completed projects with signed affidavits.
ASQ’s page does not spell out which candidates submit one project and which two; check the affidavit form in your application before you start documenting. Either way, a project you have only studied in a course does not replace one you have completed.
Source: ASQ — Six Sigma Black Belt Certification. Checked 10 October 2026.
How to get Six Sigma Black Belt certification, step by step
If you are wondering how to get six sigma black belt certification from ASQ, the process has four steps:
- Submit your application online; ASQ’s online review takes one to two business days.
- ASQ either approves the application or puts it on hold and tells you what is missing.
- Choose computer-based or paper-based testing; you receive an eligibility email one to two business days after approval.
- Schedule your exam with Prometric in the testing window you chose when you applied, then pass with 550 of 750 points.
Source: ASQ — Six Sigma Black Belt Certification. Checked 10 October 2026.
Lean Six Sigma Black Belt requirements
Lean six sigma black belt requirements depend entirely on who issues the certificate. ASQ’s credential — the CSSBB — uses the experience and project requirements above, and its handbook covers lean tools as part of the Body of Knowledge. A training provider’s “lean” black belt may require only its own course and exam, which is exactly why the requirements are worth comparing before you choose.
So how to get lean six sigma black belt certification that an employer can verify independently? Pick a certifying body that checks experience and project work and runs a proctored exam, as ASQ does.
Source: ASQ — Six Sigma Black Belt Certification. Checked 10 October 2026.
Keeping the certification: recertification requirements
Meeting the requirements once is not the end. ASQ requires Black Belts to recertify every three years, either with 18 recertification units or by retaking the exam at the end of the period.
Source: ASQ — Recertification. Checked 10 October 2026.
CSSBB requirements: questions people ask
What are the six sigma black belt certification requirements?
Three years of full-time, paid experience in one or more areas of the CSSBB Body of Knowledge, completed project work with a signed affidavit, and a passed exam. Source: ASQ, checked 10 October 2026.
How to get six sigma black belt certified without a degree?
ASQ’s CSSBB requirements list no degree — experience, project work and the exam are what count. Source: ASQ CSSBB page, checked 10 October 2026.
How to get black belt certification in Six Sigma if I have not completed a project yet?
You cannot apply for the CSSBB without one: ASQ requires at least one completed Six Sigma project with a signed affidavit.
Do I need a Green Belt first?
ASQ’s CSSBB requirements do not list a Green Belt.
What score do I need to pass the exam?
550 out of 750 points. Source: ASQ exam results FAQ, checked 10 October 2026.
