Lean Six Sigma Green Belt Course & Certification

Go from practitioner to project leader. Learn the full DMAIC toolkit, statistical thinking and hypothesis testing — taught in plain English with live calculators.

★★★★★ 4.9/5 · Joined by learners across the globe Go to Academy →

CSSC accredited training provider

£25 (course, exam + certification)

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Green Belt

Practitioner level

CSSC Accredited Training Provider

Council for Six Sigma Certification

✓ Lifetime access ✓ No subscription ✓ AI Coach included

12Modules

MultipleQuizzes

4-6 wksGuided self-paced

What your enrolment includes

Immediate access to the complete online course, including AI Coach guidance, practical calculators, downloadable templates, quizzes, final assessment, unlimited retakes, tutor support, a downloadable digital certificate and a LinkedIn-ready badge.

You receive lifetime access with no subscription. AI Coach usage is subject to generous fair-use credit limits.

Accreditation
SimplicityHub is an accredited training provider with the Council for Six Sigma Certification (CSSC) for its Lean Six Sigma White, Yellow, Green and Black Belt courses.

Course support

What support do you get on this course?

Green Belt training at SimplicityHub is designed around structured guided learning, not isolated self-study. Every module includes:

AI coach for questions and guidance throughout
Guided walkthroughs of every relevant statistical and analytical tool
Worked examples from manufacturing, healthcare, logistics and office processes
Practical templates and calculators embedded in lessons
A guided improvement project you build from Define through to Control
Human tutor support by email for questions that need a person
Unlimited exam retakes

Course Syllabus

Lean Six Sigma Green Belt

Level: Green Belt | Price: £25 (or Free when you purchase the Ultimate DMAIC Playbook for £25) | Assessment: 65-question exam · 70% pass mark · Certificate + LinkedIn badge

Course Content

✓ Advanced project management for DMAIC: multi-workstream projects, stakeholder management, and change control

✓ Advanced process capability: Cp, Cpk, Pp, Ppk, and interpreting capability indices for customer specifications

✓ Intermediate statistics: normality testing, confidence intervals, and selecting the right statistical test

✓ Hypothesis testing in depth: t-tests, ANOVA, chi-square, Mann-Whitney, and when to use each

✓ Regression analysis: simple and multiple linear regression, residual analysis, and prediction intervals

✓ Design of Experiments (DOE) introduction: full factorial designs, main effects, and interaction plots

✓ FMEA (Failure Mode and Effects Analysis): risk prioritisation for process and product design

✓ Multi-vari charts, box plots, and graphical analysis for root cause confirmation

✓ Advanced control charts: Xbar-R, Xbar-S, I-MR, P-charts, C-charts — selection criteria and interpretation

✓ Project financials: calculating hard and soft savings, benefit realisation, and presenting ROI to finance teams

Learning Outcomes

✓ Lead a full Green Belt DMAIC project involving statistical analysis and data-driven root cause confirmation

✓ Perform and interpret process capability analysis for any continuous or attribute data set

✓ Select and run the correct hypothesis test to confirm or reject improvement hypotheses

✓ Use regression analysis to model relationships between process inputs and outputs

✓ Design and analyse a basic factorial experiment to optimise process settings

✓ Complete an FMEA for a process redesign and use RPN scores to prioritise risk mitigation

✓ Build and interpret a suite of control charts for ongoing process monitoring

✓ Present a completed project to a finance team with a validated savings calculation

Estimated Annual Time Saving per Person

Estimated 20–50 hours per person per year. Green Belt projects typically deliver 20–40% reduction in defect rates, 15–35% improvement in cycle time, and measurable cost of quality savings. A single well-executed Green Belt project commonly saves £50,000–£250,000 in direct costs per year, depending on process volume.

Learner Success Story

Do what Joe did.
Learn, apply, excel!

Joe Campbell took our Green Belt course, applied the templates to a real project, and turned it into a career-defining case study.

Joe Campbell

Lean Six Sigma Green Belt · Verified learner

★★★★★

“Really decent green belt course, using real templates and it’s great to work on a project, I would recommend!”

Joe didn’t just watch the lessons — he rolled up his sleeves and applied the DMAIC framework to a real workplace project. Using the course’s downloadable templates, he worked through each phase: defining the problem, measuring baseline performance, analysing root causes, implementing improvements, and establishing controls. The result? A documented case study that demonstrates real Green Belt capability.

Read Joe’s case study

Want to build your own? Every course at SimplicityHub comes with downloadable templates — and they’re free, always.

Team & Group Training

Training your team?

Get your whole team certified in Lean Six Sigma. Group rates available for 5–50+ people — contact us to discuss your requirements and we’ll put together a tailored quote.

✓ Discounted group rates
✓ All belt levels covered
✓ downloadable digital certificates for every learner
✓ Lifetime access included

Council for Six Sigma Certification seal

Accredited training provider

Accredited Lean Six Sigma training provider

SimplicityHub is an accredited training provider with the Council for Six Sigma Certification (CSSC) for its Lean Six Sigma White, Yellow, Green and Black Belt courses. You can view the accrediting body at sixsigmacouncil.org.

Lean Six Sigma Green Belt

£25 (course, exam + certificate) Learn more 🎓 Standalone Exam — £30

Compare formats

Self-paced vs live Green Belt training

Live cohort Green Belt courses typically cost £1,500 to £5,700 and require fixed attendance on set dates. SimplicityHub Green Belt costs £25, starts immediately and includes CSSC-accredited training with structured support built in. You complete a real improvement project, get unlimited retakes and retain lifetime access to all materials. No scheduling delays. No travel. No cohort dependency.

See the full format comparison See the full cost comparison

100+ free templates

Project charters, SIPOC, fishbone, 5S and more — each with a completed example.

25 free calculators

Process capability, OEE, takt time, sample size and more — with interpretation guidance.

★

Price Match Guarantee

Found it cheaper elsewhere? We'll match it.

If you find this course available at a lower price on another website, just contact us with the website and the price you found — We will take a look.

Example Course Content

Some of the features in our courses

A quick look inside the Yellow Belt course to give you visibility of the lesson layouts, example lesson content, tools and the certificate journey before enrolling in your chosen course.

Each course has different material and the Green Belt is just being used as an example. If you choose White Belt, Yellow Belt, Green Belt or Black Belt your content will vary as you go.

SimplicityHub Lean Six Sigma Green Belt course demo

Who is this for?

Built for project leaders

Green Belt is for people who will actually lead improvement projects. You'll leave able to write a project charter, collect and analyse data, test hypotheses, and present capability results to executives.

Most learners complete in 4-6 weeks at 5-6 hours per week. The course includes a guided mini-project so you apply every tool to a real scenario.

If you already have Yellow Belt, Green Belt is the natural next step.

Curriculum

The full Green Belt curriculum

12 modules · 77 lessons · structured self-paced learning with guided tools, AI support and lifetime access.

Advanced DMAIC Overview

The full DMAIC cycle at Green Belt depth, with toll-gate reviews and what each phase must deliver.

3 lessons

Project Selection and Scoping

Choosing projects that matter, writing a tight problem statement, and scoping so the work stays deliverable.

3 lessons

Define Phase: Practical Execution

Charters, SIPOC, voice of the customer, CTQs and stakeholder mapping applied to a real project.

9 lessons

Measure Phase: Data Collection and Capability

Data collection plans, measurement system analysis, descriptive statistics and process capability (Cp, Cpk, Pp, Ppk).

10 lessons

Analyse Phase: Root Cause Confirmation

Hypothesis testing, t-tests, ANOVA, chi-square and regression to prove root cause rather than guess it.

11 lessons

Improve Phase: Solution Design and Piloting

Generating and selecting solutions, pilot design, risk assessment and building the implementation plan.

10 lessons

Control Phase: Sustaining Improvement

Control plans, SPC charts, standard work and handover so gains hold after the project closes.

10 lessons

Six Sigma Tools: Applied Practice

Hands-on practice with the core toolset using live calculators and downloadable templates.

11 lessons

Project Leadership

Leading a project team, running effective reviews and managing upwards to keep sponsors engaged.

3 lessons

Change Management

Bringing people with you — resistance, communication planning and embedding new ways of working.

3 lessons

Financial Impact Calculation

Quantifying hard and soft savings so your project benefits stand up to finance scrutiny.

3 lessons

Mini Project: End to End Project Overview

A full worked project from Define to Control, reviewed by a qualified Master Black Belt.

1 lesson

Why Green Belt costs £25

Get 12 structured modules with guided tools and AI support covering the full DMAIC cycle, statistical analysis, hypothesis testing, process capability, regression, control methods, practical calculators and downloadable templates. Your £25 enrolment includes the final assessment, unlimited retakes, tutor support, a downloadable digital certificate, LinkedIn badge, AI Coach access and lifetime access with no subscription.

12 Green Belt modules on demand
AI Coach guidance, subject to generous fair-use credit limits
Practical calculators and downloadable templates
Module quizzes and final assessment
Unlimited assessment retakes
Tutor support
Downloadable digital certificate and LinkedIn-ready badge
Immediate activation and lifetime access with no subscription

See how our £25 price compares to every other UK Green Belt provider →

Your learning pathway

Where does Green Belt fit in your journey?

Step 1

White Belt

Awareness · FREE

Start free →

Step 2

Yellow Belt

Foundation · £25

View course →

You are here

Green Belt

Practitioner · £25

View course →

Step 4

Black Belt

Expert · £25

View course →

What's included for £25

Everything you need to support real projects on your team

12 Green Belt modules on demand

Multiple module quizzes + final knowledge test

Live calculators (DPMO, takt time, cycle time)

Inline AI coach to ask anything

Downloadable templates (SIPOC, fishbone, hypothesis tests)

Personalised certificate on completion

Lifetime access — no subscription

FAQ

Common questions

Do I need previous Lean Six Sigma training?

No. There is no formal prior-learning requirement. Green Belt learners can enrol directly, although learners new to Lean Six Sigma may find Yellow Belt useful as a foundation.

What does the course price include?

Your enrolment includes the full structured course with guided tools and AI support, practical calculators, downloadable templates, AI Coach guidance, quizzes, final assessment, unlimited retakes, tutor support, a downloadable digital certificate, a LinkedIn-ready badge and lifetime access.

When do I get access?

Access is activated immediately after enrolment. You can begin learning straight away.

How long can I access the course?

You receive lifetime access with no subscription or renewal fee.

Is AI Coach included?

Yes. AI Coach is included with every course to provide contextual learning support. Usage is subject to generous fair-use credit limits.

What certificate do I receive?

On completion, you receive a downloadable digital certificate and a LinkedIn-ready badge.

Are the Lean Six Sigma belt courses CSSC accredited?

SimplicityHub is an accredited training provider with the Council for Six Sigma Certification for its Lean Six Sigma White, Yellow, Green and Black Belt courses.

Want the full picture? Read our Lean Six Sigma certification guide to compare all four belts side by side.

Belt comparison

How the belts compare

	Yellow	Green	Black
Price	£25	£25	£25
Depth	Awareness	Practitioner	Expert / leader
Duration	4-6 weeks	4-6 weeks	8-12 weeks
Mini-project	—	Guided	Full, AI-graded
Best for	Team members	Project leads	CI leaders

What your enrolment includes

You receive lifetime access with no subscription. AI Coach usage is subject to generous fair-use credit limits.

Accreditation
SimplicityHub is an accredited training provider with the Council for Six Sigma Certification (CSSC) for its Lean Six Sigma White, Yellow, Green and Black Belt courses.

14-Day Alignment Guarantee

Quality you can trust — backed by our fair refund policy.

Try the course for up to 14 days. If you believe the course content is not in line with current industry standards or fails to deliver on the learning outcomes described, contact us with details of your concern and we will review it. Refunds are assessed against the stated criteria and issued on a case-by-case basis at SimplicityHub®’s reasonable discretion.

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Lean Six Sigma Green Belt Course & Certification

What your enrolment includes

What support do you get on this course?