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Estimate your annual CO₂ emissions from travel, energy, and diet
A carbon footprint is the total greenhouse gas emissions caused by an individual, expressed in metric tons of CO₂ equivalent per year. It includes emissions from transportation, energy use, food, and consumption.
12.7
metric tons CO₂/year
3.2
Driving
2.5
Flying
4.5
Electricity
2.5
Diet
| Country | Tons CO₂/Year |
|---|---|
| United States | 16.0 |
| Australia | 15.0 |
| Germany | 8.1 |
| United Kingdom | 5.3 |
| China | 7.4 |
| India | 1.9 |
| World Average | 4.0 |
Formula
Total CO₂ = Driving + Flying + Electricity + DietDriving = weekly miles × 52 × 0.404 kg CO₂/mile
Flying = annual flight hours × 250 kg CO₂/hour
Electricity = monthly kWh × 12 × 0.417 kg CO₂/kWh (US avg)
Diet = annual food emissions based on diet type (1.0–3.3 tons)
Worked Example
Average American household
Did you know? According to the EPA, the average passenger vehicle emits about 4.6 metric tons of CO₂ per year. Switching to an electric vehicle powered by the US grid reduces this by approximately 50-70%.
Sources
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