Understanding ISO 14067, PAS 2050 and the GHG Protocol Product Standard
For products and business scenarios that are not yet covered by mandatory carbon footprint regulations, carbon accounting is often driven by customer requirements.
In practice, companies may be asked to calculate product carbon footprints because:
- International buyers request them
- Retailers or brand owners need supplier emission data
- Customers want more transparent sustainability information
- Companies need evidence for low-carbon claims or procurement
- Internal teams want to identify emission reduction opportunities
When no specific regulation applies, customers commonly refer to three international voluntary standards:
- ISO 14067
- PAS 2050
- GHG Protocol Product Standard
Quick overview
Product carbon footprint standards usually answer three questions:
- ISO 14067: How should a product carbon footprint be quantified and reported under an internationally recognized standard?
- PAS 2050: How can goods and services be assessed using a practical life cycle greenhouse gas method?
- GHG Protocol Product Standard: How can product-level emissions be connected with broader corporate greenhouse gas and Scope 3 strategy?
What is a product carbon footprint?
A product carbon footprint measures the greenhouse gas emissions generated throughout a product's life cycle.
These emissions are usually expressed as CO2e, or carbon dioxide equivalent. This allows different greenhouse gases, such as carbon dioxide, methane and nitrous oxide, to be converted into one common unit.
A product carbon footprint may include emissions from:
- Raw material extraction
- Manufacturing and processing
- Packaging
- Transportation and distribution
- Product use
- Recycling, waste treatment, or disposal
Product life cycle boundary
Common boundary types include:
- Cradle-to-gate: From raw materials to the factory gate
- Cradle-to-grave: From raw materials through use and end-of-life treatment
- Cradle-to-cradle: Includes recycling or reuse into a new product cycle
Choosing the right boundary is one of the most important early decisions in product carbon footprint work. A cradle-to-gate footprint and a cradle-to-grave footprint should not be compared unless the boundary difference is clearly explained.
1. ISO 14067
Full name: Greenhouse gases - Carbon footprint of products - Requirements and guidelines
Developed by: International Organization for Standardization
ISO 14067 provides requirements and guidance for quantifying and reporting the carbon footprint of products. It is based on life cycle assessment principles and supports consistent, transparent and comparable product carbon footprint calculations.
When is ISO 14067 commonly used?
ISO 14067 is often used for:
- International customer reporting
- Product carbon footprint certification
- Supply-chain carbon management
- Internal product improvement
- Research and technical studies
- Supporting environmental claims with a recognized methodology
Why it matters
ISO 14067 is widely recognized internationally. For companies selling into global markets, it is often a strong default choice when customers ask for a credible product carbon footprint.
2. PAS 2050
Full name: Specification for the assessment of the life cycle greenhouse gas emissions of goods and services
Developed by: British Standards Institution
PAS 2050 was first published in 2008 and later updated in 2011. It is widely recognized as one of the earliest product carbon footprint methodology standards.
PAS 2050 helps companies assess the life cycle greenhouse gas emissions of specific goods and services.
When is PAS 2050 commonly used?
PAS 2050 is useful when companies need a practical method for:
- Defining product boundaries
- Identifying emission sources
- Collecting activity data
- Applying emission factors
- Calculating life cycle greenhouse gas emissions
- Communicating results to customers or supply-chain partners
Why it matters
PAS 2050 helped shape many later product carbon footprint approaches. It remains relevant when a buyer, industry program, or legacy footprint system specifically references it.
3. GHG Protocol Product Standard
Full name: Product Life Cycle Accounting and Reporting Standard
Developed by: World Resources Institute and World Business Council for Sustainable Development
The GHG Protocol is one of the most influential greenhouse gas accounting frameworks globally. Many companies already use it for corporate greenhouse gas accounting.
The Product Standard focuses on product-level life cycle emissions and helps companies understand where emissions occur across a product's value chain.
When is the GHG Protocol Product Standard commonly used?
It is especially useful for companies that want to:
- Connect product footprints with corporate carbon reporting
- Understand value-chain emissions
- Support Scope 3 emission management
- Identify life cycle emission hotspots
- Compare product lines
- Build product-level decarbonization strategies
Why it matters
The GHG Protocol Product Standard is not only about calculating a carbon number. It also helps companies understand how product emissions relate to broader corporate climate strategy.
Comparison at a glance
- ISO 14067: Best for global customer reporting, certification, and comparable product carbon footprints.
- PAS 2050: Best for practical footprint calculation, buyer-specific requests, and legacy product footprint programs.
- GHG Protocol Product Standard: Best for linking product footprints with corporate greenhouse gas accounting and Scope 3 strategy.
How to choose the right standard
The simplest rule is:
Follow the customer's requested standard first.
If no standard is specified:
- Use ISO 14067 when international comparability and recognition are important
- Use GHG Protocol Product Standard when connecting product results with corporate carbon reporting
- Use PAS 2050 when buyers, sectors, or older programs specifically reference it
What these standards have in common
Although the three standards come from different organizations, they share several core principles.
A credible product carbon footprint should:
- Clearly define the product being assessed
- Set a transparent life cycle boundary
- Use reliable activity data
- Apply appropriate emission factors
- Document assumptions and exclusions
- Use consistent allocation rules
- Report results in CO2e
- Explain limitations clearly
- Support review or verification when needed
Why these standards matter
For companies, product carbon footprint standards create a common language between suppliers, customers, regulators and investors.
They help answer practical questions such as:
- Which product has the highest emissions?
- Which life cycle stage contributes the most?
- Which supplier data is most important?
- Where can emissions be reduced?
- How can the company support customer carbon reporting?
- How can carbon claims be made more credible?
For buyers, these standards improve transparency and comparability across suppliers.
For manufacturers, they provide a structured way to meet customer expectations and prepare for future regulatory requirements.
Key takeaways
- ISO 14067 is often the most internationally recognized reference for product carbon footprint quantification and reporting.
- PAS 2050 remains useful when a buyer, industry program, or legacy product footprint method refers to it.
- GHG Protocol Product Standard is especially valuable when product results need to connect with corporate greenhouse gas accounting or Scope 3 management.
- All three standards depend on clear boundaries, reliable activity data, appropriate emission factors, documented assumptions, and review-ready evidence.
Conclusion
ISO 14067, PAS 2050 and the GHG Protocol Product Standard are three important voluntary frameworks for product carbon footprint accounting.
They are especially useful in markets where product carbon footprint disclosure is not yet mandatory but is increasingly expected by international customers.
While each standard has its own background and strengths, they all support the same goal: helping companies understand, quantify and reduce the greenhouse gas emissions associated with their products.
For companies entering global supply chains, learning these standards is no longer just a technical exercise. It is becoming an essential part of customer communication, product competitiveness and long-term decarbonization strategy.
How Climate Seal helps
Climate Seal helps teams turn these standards into practical carbon accounting workflows:
- Ask business-friendly questions to determine the right standard, boundary, and minimum files needed
- Parse BOM, supplier, energy, logistics, and process data into structured carbon accounting inputs
- Match emission factors with clear source, version, and rationale
- Build product carbon footprint models with audit-ready evidence trails
- Support review-ready outputs for customers, suppliers, and internal decarbonization teams