We compared 4 online six sigma certification programs available to US learners. 4 of them have a full editorial score so far, built from five published criteria. Published prices range from $99 to $3,895.
Ordered by our editorial score, never by commission. Filters only hide programs; they don't change the order.
Professionals who want an IACET-accredited Green Belt with the choice of live virtual classes or self-paced study.
Professionals who want approachable, online Lean Six Sigma Green Belt training with simple, plain-language lessons.
Learners who want a CPD-accredited, self-paced Green Belt with installment options.
Teams and managers who want practical process-improvement training led by Dan Feliciano.
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| Program | Score | Price | Duration | Format | Accreditation | Free trial |
|---|---|---|---|---|---|---|
| 8.9 | $695 – $2,950 | About 2 weeks (on-site/virtual, two 4-day weeks) or 30 hours (online self-paced), plus a project for project certification. | Hybrid | Accredited by IACET and ISSSP (per 6Sigma.us). | — | |
| 8.6 | $99 – $899 | — | Self-paced | — | — | |
| 8.4 | — | 12 months of access; short video lessons and quizzes. | Self-paced | CPD-accredited certificate. | Free Fundamentals course. | |
| 7.8 | $595 – $3,895 | — | Self-paced | — | — |
“—” means the information was not published or not yet checked. Data from official program pages, last checked October 5, 2026.
Based on our editorial score, 6Sigma.us (6Sigma.us Lean Six Sigma Green Belt) ranks first at 8.9/10. Best for: Professionals who want an IACET-accredited Green Belt with the choice of live virtual classes or self-paced study.
Among the programs we checked that publish a price, prices run from $99 to $3,895. Prices change often, so check the official site before you enroll.
We rank programs by an editorial score built from five criteria (curriculum, credibility, value, flexibility and support). Affiliate commissions never influence the order. Programs we have not scored yet are listed after scored ones.