Estimate yearly food-related CO₂e from weekly beef, chicken, and plant servings.
| kg CO₂e / year | – |
| Beef share (%) | – |
Use this calculator for a planning figure of diet carbon from how often you eat beef, chicken, and plant-based mains, not a full grocery life-cycle assessment.
Each serving is taken as 0.15 kg edible. Yearly CO₂e is servings × 0.15 × the factor × 52 weeks. The factors are order-of-magnitude lifecycle figures: beef 27, chicken 6.9, and plant mains 1.4 kg CO₂e per kg edible. Beef share is 100 × beef CO₂e ÷ the three-item total.
This only covers those three plate types. Dairy, fish, cooking fuel, and waste are ignored. Factors vary widely by country and farming system.
Beef servings / week: How many beef mains you eat in a typical week.
Chicken servings / week: How many chicken mains you eat in a typical week.
Plant servings / week: How many plant-based mains (beans, tofu, grains as the protein) you eat in a typical week.
kg CO₂e / year: Estimated carbon from these three items over a year.
Beef share (%): How much of that total comes from beef.
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