Certification body
Quality professional association offering Six Sigma belt certifications, question banks and online exam prep.
- DMAIC
- SPC
- Quality management
- Pricing
- Published pricing
- Delivery
- Online
Lean Six Sigma certification: belt levels and costsEarn the belt by doing the work.
Lean Six Sigma certification shows that you have learned lean and Six Sigma improvement methods to a given belt level, and in many programs that you have applied them on a real project. You can earn it online, in a classroom or through an employer's internal program, from white belt up to black belt.
Showing 3 of 3 tools
1 2 Certification body
Certification body providing free self-study Six Sigma guides alongside paid belt exams.
- DMAIC
- Lean Six Sigma
- Pricing
- Free plan + paid
- Delivery
- Online
3 Online certification
Online Lean Six Sigma training and certification from White Belt to Black Belt, plus free templates.
- DMAIC
- VSM
- SPC
- Kaizen
- 5S
- +1 more
- Pricing
- Free plan + paid
- Delivery
- Online
The basics
About lean six sigma certification & training
Lean Six Sigma certification shows that a person has learned the methods at a given belt level. Common levels are white, yellow, green and black belt.
There is no single official body. Certificates come from professional societies, independent certification bodies, universities and training companies, each with its own rules.
Some bodies certify by exam only. Others require a completed improvement project as well. Check which applies before you choose.
Getting the most from it
Free introductory material covers the basics of lean and DMAIC. It is a sensible step before paying for a course.
A paid program earns its place when you will run real projects soon and need coaching, a recognized credential or both.
A path to follow
- 1Learn the basics at white belt
- 2Support projects at yellow belt
- 3Lead a project at green belt
- 4Pass the exam
- 5Coach others at black belt
- 6Renew as the body requires
How the listed options are priced
- Free plan + paid: 2
- Published pricing: 1
Lean Six Sigma certification online
Most providers now offer Lean Six Sigma certification online, either self-paced or with live online classes. Many exams can also be taken online with remote proctoring.
Self-paced courses suit people who need flexibility, but they leave you to find and run a project on your own. Live courses and programs with coaching keep you on schedule and give feedback on your project work.
Before you enroll, check whether the online option includes project review and a proctored exam, or only course completion. The Lean training guide compares formats in more detail.
How long Lean Six Sigma certification takes
Time depends mostly on the belt level, the format and whether a project is required. White and yellow belt courses are short, while green and black belt programs take much longer.
When a project is required, the project usually takes longer than the coursework, because it runs at the pace of real data and real process changes. Exam-only routes are faster but carry less weight with many employers.
Free Lean Six Sigma certification: what you get
Free courses and certificates exist, mostly at white and yellow belt. They are a useful way to learn the vocabulary and DMAIC structure before paying for more.
Free certificates rarely include a proctored exam or a reviewed project, so treat them as learning rather than a credential. The free Six Sigma certification guide covers what to check.
Lean Six Sigma belt levels
Most Lean Six Sigma certification follows the same belt ladder, borrowed from martial arts. Each body sets its own syllabus, so the exact content at each level varies.
White belt: an introduction to the language and ideas of Lean Six Sigma. White belts take part in improvement work in their own area.
Yellow belt: the basics of DMAIC, process mapping and simple problem-solving tools. Yellow belts support projects as team members, often by collecting data.
Green belt: DMAIC in depth, with measurement, basic statistics, root cause tools and control plans. Green belts usually lead smaller projects alongside their regular job.
Black belt: adds advanced statistics, such as hypothesis testing, regression and design of experiments, and leading change. Black belts lead larger cross-functional projects and coach green belts.
Master black belt: the level above black belt. Master black belts train and coach black belts, help leaders choose projects and set standards for a whole program.
What affects the cost of certification
Prices vary widely between providers and are not standardized. Compare what each fee includes rather than the headline price.
Belt level: higher belts take longer to teach and assess, so they usually cost more.
Format: self-paced online courses usually cost less than live online or classroom training.
Exam only or training plus exam: some bodies sell the exam on its own, while training providers often bundle the course and the exam.
Project review and coaching: a reviewed project adds cost, but it is also what gives the certificate weight with employers.
Extras: statistical software licenses, study materials, exam retakes and renewal fees can all add to the total. Many people are sponsored by their employer, so ask before you pay yourself.
How to choose a certification body
Accreditation: ask who accredits the provider and what that accreditation checks. A training provider can be accredited to teach a syllabus without the exam being set independently.
The exam: check whether it is proctored, how long it is and whether it is based on a published body of knowledge. Professional societies such as ASQ and independent bodies such as IASSC publish one for each belt.
Project requirement: for green and black belt, check whether a completed improvement project is required, and who reviews it. A project shows applied skill, not only exam knowledge.
Recertification: check whether the certificate expires and what renewal requires, such as continuing education or a new exam.
Recognition: look at job postings in your field to see which bodies, if any, employers name. The Six Sigma software category covers the statistics tools you will meet on the course.
Buying guide
How to choose Lean Six Sigma Certification & Training
Who it's for: Engineers, quality and operations staff, analysts and managers building improvement skills. Organizations also use these programs to train internal belts and coaches in kanban or scaled agile methods.
What to look for
A real project requirement
Programs that require a completed, reviewed improvement project show applied skill as well as knowledge.
A clear body of knowledge
A published syllabus for each level, so you can compare what a yellow, green or black belt covers with each provider.
Qualified, practicing instructors
Trainers who have led real projects and can coach you through yours, not only deliver slides.
Recognition that fits your goal
Check whether employers in your field ask for a specific body, or simply for proven project results.
Common mistakes
- Buying the cheapest exam-only certificate. Without a project, it often carries little weight with employers.
- Jumping straight to black belt. Without hands-on green belt experience, the advanced statistics rarely stick.
- Training people with no project waiting for them. Skills fade if they are not used soon after training.
Before you choose
Questions to ask before you choose
- 1Does the certification require a completed project, and who reviews it?
- 2Is the exam set and proctored independently of the training provider?
- 3Does the certificate expire, and what does renewal require?
- 4What statistical software is used in the course, and is a license included?
FAQ
Lean Six Sigma Certification & Training: common questions
Is there one official Lean Six Sigma certification?
No. Many bodies and training providers certify belts, with different syllabi and standards. Compare the requirements, not just the belt color.
Should I start with lean or Six Sigma?
Lean basics such as waste, flow and standard work suit most roles first. Add Six Sigma statistics when you face problems that need data analysis.
Are kanban and scaled agile certifications the same as belts?
No. They cover flow-based and agile delivery methods for knowledge work, while belts focus on process improvement and statistics.
What are the Lean Six Sigma belt levels?
White, yellow, green and black belt, with master black belt above black belt. Each level adds depth, from basic awareness to leading and coaching projects.
How much does Lean Six Sigma certification cost?
It varies widely by belt level, format and provider. Exam-only and self-paced options usually cost less than live training with project coaching, so compare what each fee includes.
Which Lean Six Sigma certification should I get first?
Yellow belt suits people who will support projects. Green belt suits people who will lead projects in their own area.
Does Lean Six Sigma certification expire?
It depends on the body. Some certificates do not expire, while others must be renewed through continuing education or a new exam.
What tools does a green belt use?
Typically DMAIC, process mapping, measurement system analysis, basic statistics, root cause tools and control charts. Exact content varies by provider.
Is a course or a certificate more useful?
A course teaches the methods. A certificate shows a third party checked what you learned. Many people want both, plus a real project.
Is Lean Six Sigma certification worth it?
It depends on your role and goal. It tends to carry the most weight when it is backed by a completed project with results you can describe.
What is the difference between Lean Six Sigma and Six Sigma certification?
Lean Six Sigma adds lean tools for flow and waste, such as value stream mapping and 5S, to the DMAIC statistics of Six Sigma. The syllabi overlap heavily.
Do I need a yellow belt before a green belt?
Usually not. Many bodies let you start at green belt, but check each program's prerequisites before you enroll.
Sources
Written by the lean-stack editors following our methodology. Updated October 3, 2026.
Related categories
Six Sigma SoftwareStatistical analysis and DMAIC project tools for improvement teams.Operational Excellence SoftwareRun and report on portfolios of improvement projects.Lean TemplatesReady-made templates for A3, VSM, kaizen and more.Lean BooksBooks on lean thinking, lean manufacturing and lean startup.SPC SoftwareControl charts and capability studies for process measurements.Root Cause Analysis SoftwareA3, 5 Whys, fishbone and 8D problem solving.
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