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A carbon footprint is the total amount of greenhouse gases (GHGs), expressed as carbon dioxide equivalents (CO2e), emitted directly or indirectly by human activities.
Each gas has a unique Global Warming Potential (GWP), which is used to convert emissions to a standard CO2e value.
CO2e = Activity × Emission Factor × GWPFor example, burning 1 gallon of gasoline (Emission Factor ≈ 8.89 kg CO2/gallon) contributes 8.89 kg CO2e to your footprint.
Take control of your impact—start calculating now and take the first step toward a cleaner, more conscious lifestyle.
| Category | Input | Emission Factor | Estimated Footprint |
|---|---|---|---|
| Home Energy | 12,000 kWh/year | 0.233 kg CO2e/kWh | 2.8 tons CO2e/year |
| Transportation (Gasoline) | 500 gallons/year | 8.89 kg CO2e/gallon | 4.4 tons CO2e/year |
| Air Travel | 25,000 km/year | 0.195 kg CO2e/km × 1.9 | 9.3 tons CO2e/year |
| Diet (Omnivore) | 2,500 kcal/day | ~2.5 kg CO2e/day | 0.9 tons CO2e/year |
| Offset Use | 1 ton CO2e offset | Certified offset = -1 ton CO2e | -1.0 tons CO2e/year |
| Electric Vehicle Charging | 3,500 kWh/year | 0.45 kg CO2e/kWh (coal-heavy grid) | 1.6 tons CO2e/year |