Factors used
- Gasoline: 2.31 kg of CO₂ per liter (8.74 kg per gallon); diesel: 2.68 kg per liter
- Electricity: the grid factor you enter (the US average is around 0.37 kg per kWh)
- LPG (propane): 2.98 kg per kg
- Flights: 0.15 kg per passenger-km
Example
Driving 12,000 miles a year at 25 mpg, using 880 kWh a month and flying 2,500 miles adds up to about 8.71 tons of CO₂ a year. The car accounts for 48% and electricity for 45%.
How to reduce it
- Drive less or switch to a more efficient car.
- Use less power, or choose a clean energy plan or solar panels.
- Fly less, especially on long trips.
See the savings of solar power with the solar panel calculator.
Frequently asked questions
Is this my full footprint?
No. It covers the main direct sources. Food, shopping and services add more, often several tons a year.
Why does the grid factor matter so much?
Power from coal emits much more than power from hydro, wind or nuclear. Your utility’s bill or website often shows its factor.
See also
Results are estimates for information only and are not financial, legal or medical advice. Rates, taxes and fees vary — confirm with a professional or your lender.