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Not all green labels are created equal. We break down the most important sustainability certifications — what they measure, how rigorous they are, what they cost, and which companies hold them.
Worried about greenwashing?
Learn how to tell real sustainability claims from marketing spin with our greenwashing guide.
Read the greenwashing guideThere are hundreds of sustainability labels on the market, but their rigor varies wildly. Some require third-party audits and measurable outcomes; others are self-declared or pay-to-play. Understanding what each certification actually measures helps you support businesses making genuine commitments — and avoid those hiding behind labels.
by B Lab
B Corp certification measures a company's entire social and environmental impact. Learn requirements, costs, the assessment process, and which companies are B Corp certified.
by Fairtrade International (FLO) / Fair Trade USA
Fair Trade certification ensures farmers and workers get fair prices and safe working conditions. Learn about standards, what products qualify, and how to verify claims.
by U.S. Environmental Protection Agency (EPA)
Energy Star certified products meet strict energy efficiency standards set by the US EPA. Learn what the label means, how it saves money, and which products qualify.
by U.S. Green Building Council (USGBC)
LEED is the world's most widely used green building rating system. Learn about certification levels (Certified, Silver, Gold, Platinum), requirements, costs, and benefits.
by Forest Stewardship Council
FSC certification ensures wood and paper products come from responsibly managed forests. Learn about FSC standards, the chain of custody, and how to verify FSC claims.
by Carbon Trust
The Carbon Trust Standard certifies organizations that measure, manage, and reduce their carbon footprint. Learn requirements, process, and how it compares to other certifications.
by Rainforest Alliance
Rainforest Alliance certification promotes sustainable farming and forestry. Learn what the frog seal means, which products qualify, and how the standards protect ecosystems.
by Cradle to Cradle Products Innovation Institute
Cradle to Cradle certification evaluates products for material health, circularity, clean air, water stewardship, and social fairness. Learn about levels and requirements.
by Gold Standard Foundation
Gold Standard carbon credits & offsets: verified projects, SDG co-benefits, registry rules, and how it differs from high-volume voluntary standards.
by CDP, UNGC, WRI, WWF
The Science Based Targets initiative validates corporate emission reduction targets aligned with climate science. Learn about SBTi requirements, the Net-Zero Standard, and which companies have committed.
by International Organization for Standardization (ISO)
ISO 14001 is the international standard for environmental management systems. Learn what it requires, how certification works, and whether it's worth it for your organization.