Product CO2e / kg Studies


CO2e / kg
= 100 g of Eggs
You can consume
kg of Eggs to exhaust your daily CO2e food budget

Categories: Dairy | Food

Eggs are a valuable source of protein, with one egg corresponding to more than 10% of the daily recommended intake of protein1. In Europe and the USA, the average consumption of eggs is 10-15 kg per person, corresponding to 150-250 eggs2.

Feed (wheat 60-70%, soy 10-20% and seeds) represents the majority of the GHG emissions, ranging from 50-75%3. To produce one kg of eggs, around 2 kg of feed are needed4. One hen typically produces around 20 kg of eggs4.

  1. How much protein do you need every day? (created June 21 2019; accessed September 27 2021) 

  2. Per capita egg consumption, 2017. Our world in data. 

  3. Taylor, R. C., Omed, H., & Edwards-Jones, G. (2014). The greenhouse emissions footprint of free-range eggs. Poultry science, 93(1), 231-237. 

  4. Cederberg, C. (2009). Greenhouse gas emissions from Swedish production of meat, milk and eggs 1990 and 2005. SIK Institutet för livsmedel och bioteknik. 

Subcategories: Eggs (eco) | Eggs (free-range) | Eggs (cooked)


Source Notes CO2e Country origin Country consumption Weight
Systematic review of greenhouse gas emissions for different fresh food categories Table 5 Median; #LCA studies: 19; #GWP values: 38; Mean: 3.39; Stdev: 1.21; Min: 1.3; Max: 6
Unknown Unknown 8
Reducing food’s environmental impacts through producers and consumers Figure 1
Unknown Unknown 8
Greenhouse gas emissions of realistic dietary choices in Denmark: the carbon footprint and nutritional value of dairy products Table 1; including waste; excluding waste: 2.1
Unknown Unknown 8
Potential contributions of food consumption patterns to climate change Swedish, cooked; CO2: 1.7, NO2: 0.74, NH4: 0.04
Sweden Sweden 8
Meat eater's guide to climate change + health Table 21. Greenhouse Gas Emissions from Egg Production (at farmgate)
Egg production system kg of CO2e per kg of edible eggs
British Columbia large-scale free range 2.38
New Jersey large scale confined 1.86
Average CO2e emissions per kg of eggs 2.12
Table 22. Greenhouse Gas Emissions from Egg Consumption (post-farmgate)
Emission Source kg of CO2
e per kg of consumed eggs
Processing 0.29
Domestic Transport 0.37
Refrigeration (retail) 0.07
Home Cooking 0.23
Waste Disposal 0.22
Total 1.18
Per kg of consumed eggs (includes moisture loss, waste loss and post-farmgate): 4.83 kg CO2e
Pendos CO2-Zähler Eier
Unknown Unknown 5
Klimatarier CO2 Rechner Eier
Unknown Unknown 5
Mat-klimat-listan Variation 1.4-4.6 kgCO2/kg
Unknown Sweden 6
Den store klimadatabase Eggs (free-range, indoor), Agriculture: 0.41, iLUC: 0.14, Food processing: 0, Packaging: 0.24, Transport: 0.05
Unknown Unknown 5
The greenhouse emissions footprint of free-range eggs Data taken for Farm 1 (single enterprise eggs)
Unknown Unknown 10
Greenhouse gas emissions from Swedish production of meat, milk and eggs 1990 and 2005 Appendix 9, table 3a,: egg production 2005; at farm gate
Sweden Sweden 8
Life Cycle Impacts of Proteinrich Foods for Superwijzer battery
Unknown Unknown 4
Ökologische Fußabdrücke von Lebensmitteln und Gerichten in Deutschland (IFEU) Ei
Unknown Germany 6
RISE Open access list 1.7 Per kg egg with shell
Sweden Sweden 5