From paddock to plate, food production is responsible for 34% of global greenhouse gas emissions. That stat alone makes one thing clear: reducing the climate impact of food isn't optional, it's urgent.
For food businesses—whether you operate restaurants, hotels, contract catering, or food production—the emissions tied to what you serve and sell are almost certainly your largest source of climate impact.
Understanding that impact starts with one concept: the food carbon footprint.
A food carbon footprint is the total greenhouse gas (GHG) emissions associated with a food product across its life cycle—from agricultural production through processing, packaging, transport, and waste. These emissions are expressed in carbon dioxide equivalents (CO₂e), a unit that converts CO₂, methane, nitrous oxide, and other gases into a single comparable value.
The carbon footprint focuses specifically on climate impact. It's distinct from other environmental metrics like water use or land use, which are measured separately under a full Life Cycle Assessment (LCA).
For a step-by-step breakdown of how food carbon footprints are actually calculated, see How to Calculate the Carbon Footprint of Food.
Regulatory pressure is the immediate driver for many organizations. Under the CSRD and aligned frameworks, large food businesses are now required to disclose Scope 3 emissions—and for most food companies, purchased ingredients represent 80–90% of total GHG emissions. Without ingredient-level carbon data, that disclosure is either a rough estimate or a significant compliance risk.
But the strategic case goes further than reporting. Carbon footprint data reveals where emissions are concentrated in your supply chain. That's also where cost inefficiencies, procurement risks, and reduction opportunities tend to cluster. The businesses getting value from this data aren't using it only to satisfy a reporting obligation—they're using it to make better purchasing decisions, strengthen supplier relationships, and demonstrate credible progress against climate targets.
Carbon footprint data is also increasingly a commercial requirement. Procurement teams at large corporates are asking caterers and food producers for verified emissions data as a condition of tender. Sustainability commitments without data to back them up are becoming harder to defend.
Emissions vary significantly across food categories, and within them. The same ingredient can carry very different footprints depending on where and how it was produced.
The main drivers are:
• Agricultural production: By far the largest factor for most ingredients. Livestock farming accounts for a disproportionate share of food emissions due to methane from digestion, nitrous oxide from fertilizers, and land use. Feed production, farming systems, and geographic origin all affect the final value.
• Land use and land-use change: Converting forest or grassland to agricultural use releases stored carbon. This is a significant factor for some ingredients, particularly beef and soy from certain regions.
Processing and packaging—relevant for highly processed products, though typically a smaller share of total emissions than primary production.
• Transport: Commonly overestimated. Transport is a meaningful factor for air-freighted goods, but for most ingredients it's a smaller contributor than farming. The "food miles" framing can be misleading without the full picture.
To illustrate the range across common categories:
| Ingredient | Approx. emissions (kg CO₂e/kg) | Main Driver |
| Beef | ~60 | Feed, digestion, land use |
| Cheese | ~21 | Dairy farming, processing |
| Chicken | ~7 | Feed, farming systems |
| Farmed salmon | ~6 | Feed, aquaculture energy |
| Tofu | ~2 | Soy farming, processing |
| Potatoes | ~0.4 | Minimal inputs |
Source: Klimato database, global averages. Values vary by origin and production method.
For a full breakdown of emissions by ingredient category, see How to Calculate the Carbon Footprint of Food.
At the corporate level, food carbon footprints are the building blocks of Scope 3 Category 1 reporting (purchased goods and services). Aggregating ingredient-level emissions data across a company's procurement gives a defensible, auditable basis for Scope 3 disclosure that spend-based methods can't provide.
For food businesses with formal sustainability commitments—particularly those working toward Science-Based Targets—this ingredient-level foundation is what makes reduction planning credible rather than directional.
For a full guide to Scope 3 reporting in the food industry, see Scope 3 Reporting for the Food Industry and Ingredient-Level Data for Accurate Scope 3 Reporting.
Not all food carbon data is equivalent. The quality of a carbon footprint depends on the emission factors it's built on—specifically whether those factors are based on peer-reviewed LCA research, clearly defined system boundaries, and transparent methodology.
Klimato's emission factors are derived from systematic literature reviews aligned with ISO 14067 (carbon footprint of products) and the broader LCA standards ISO 14040 and ISO 14044. The database covers 4,000+ ingredients across 100+ countries and is reviewed by the Swedish Environmental Research Institute (IVL) and validated against the Coolfood Methodology (WRI).
For more on what credible food carbon data looks like in practice, see the Science & Data page.
Q: What unit is a food carbon footprint expressed in?
A: CO₂e/carbon dioxide equivalents. This converts all greenhouse gases (CO₂, methane, nitrous oxide, and others) into a single value based on their relative warming potential, making different products and activities comparable.
Q: Is a food carbon footprint the same as a Scope 3 emission?
A: Related but not the same thing. A food carbon footprint is a product-level measure. Scope 3 is a corporate reporting framework. Ingredient-level carbon footprints are the underlying data that feed into a company's Scope 3 Category 1 disclosure.
Q: Does "organic" or "locally sourced" mean a lower carbon footprint?
A: Not necessarily. Organic certification doesn't guarantee lower emissions—organic beef, for example, still carries a higher footprint than most plant-based proteins. Local sourcing matters more for air-freighted goods than for most standard supply chains, where transport is a smaller driver than production.
Q: How often do emission factors change?
A: They're updated as new LCA research becomes available. Production practices, land use patterns, and feed compositions shift over time, which is why data currency matters for accurate reporting.
Q: Is measuring food carbon footprint a legal requirement?
A: For large food businesses in scope of the CSRD, Scope 3 disclosure—which relies on food carbon data—is now a regulatory requirement. Even where it isn't yet mandatory, it's increasingly a commercial prerequisite for tendering and investor reporting.
UNLOCK MORE INSIGHTS
A practical breakdown of how food companies calculate, report, and act on Scope 3 emissions—with a focus on what makes the underlying data credible.