Calculate dietary carbon footprint across food categories.
Beef and lamb emit several times more per serving than poultry because ruminant digestion produces methane. That single category usually dominates a dietary footprint even when servings are few. Reducing beef consumption is the highest-impact dietary change available, and it outweighs choices about food miles or packaging by a wide margin.
Food Carbon
Footprint = Σ(servings × emission factor), scaled up for food waste
Footprint = Σ(servings × emission factor), scaled up for food waste Beef and lamb emit several times more per serving than poultry because ruminant digestion produces methane. That single category usually dominates a dietary footprint even when servings are few.
Reducing beef consumption is the highest-impact dietary change available, and it outweighs choices about food miles or packaging by a wide margin.
This calculator takes 5 inputs: Beef or lamb servings per week, Pork or chicken servings per week, Dairy servings per day, Plant-based meals per week, Share of food wasted. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.