Six Sigma
2 exams available
Six Sigma is a globally recognized methodology that uses statistical tools to identify and eliminate defects in business processes. With over 150,000 certified graduates and adoption by Fortune 500 companies including Google, Amazon, and Microsoft, Six Sigma certification is highly valued across manufacturing, healthcare, finance, and IT sectors. Certified professionals are in high demand as organizations adopt data-driven quality improvement approaches.
Common roles
Certification tiers
White Belt
Yellow Belt
Green Belt
Black Belt
Master Black Belt
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Choosing a Six Sigma certification
The catalog covers black belt, green belt level certifications.
ICBB (IASSC Certified Lean Six Sigma Black Belt) is the lowest-level exam we list, and most candidates arrive with about 24 months of hands-on experience.
At the other end, ICGB (IASSC Certified Lean Six Sigma Green Belt) targets the most advanced role in this vendor's track on the Six Sigma path.
Typical roles this vendor's certifications support include process improvement manager, quality assurance analyst, operations manager, project manager, business analyst.
Start with the exam that matches the role you want next, not the highest-level certificate available. Each exam page on this site lists the official domains, the pass score and the exam fee, and every exam with free samples links to a set you can work through before paying for the full PDF.
| Exam | Name | Level | PDF questions | Free samples |
|---|---|---|---|---|
| ICBB | IASSC Certified Lean Six Sigma Black Belt | Black Belt | 82 | free samples |
| ICGB | IASSC Certified Lean Six Sigma Green Belt | Green Belt | 29 | — |
About Six Sigma
Why certify?
Six Sigma certified professionals earn 20-40% more than non-certified peers, with Master Black Belts averaging $130,878 and Black Belts averaging $104,974 annually.
Six Sigma Certification FAQ
Everything you need to know about Six Sigma certifications.