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ICGB

IASSC Certified Lean Six Sigma Green Belt (ICGB) guides

Every IASSC Certified Lean Six Sigma Green Belt (ICGB) guide on one page, in the order you will need them.

Questions and time: 100 questions · 180 minutes
Pass mark: 70%
Exam fee: USD 350 (IASSC website)

Start with 10 free questions to find what needs more work. No sign-up, with answer explanations.

Try 10 free questions and see your level

Before you register

IASSC Green Belt Exam Registration: Fees, Steps, ResultsHow to register for the IASSC Green Belt exam: the voucher price, booking online or at a centre, what is allowed on the day, when results come and how long the certification lasts.Last updated: 10 November 2026

While you study

IASSC Green Belt Exam Content: The Five DMAIC Phases and Their Question CountsWhat the IASSC Lean Six Sigma Green Belt exam covers: 100 questions across the five DMAIC phases, the approximate count for each phase, the 18 topics, what each tests, and test day.Last updated: 10 November 2026