Carbon Calculator

Estimate your annual carbon footprint from driving, heating, electricity, and food.

In preparation for filling out the carbon footprint tool, you will need to bring a recent utility bill, the amount of oil or propane that you used in the last 12 months and an estimate of your annual driving distance and approximate mileage for the cars that are in scope.

0 Contact Information
1 Food
Enter the number of people in your household that want to participate in carbon emissions reduction.
Total Food Emissions 6,000
Food footprint is calculated as number of persons in scope × 6,000 lbs CO2/year.
2 Driving
Estimate the annual mileage for each car by dividing the total mileage by the age of the car. Go to www.fueleconomy.gov to estimate each car's mileage per gallon.
Car Miles per year MPG lbs. CO2/year
Total Driving Emissions 0
3 Heating
For your main heating source, enter the annual consumption.
Natural Gas will be on your utility bill. Choose the units on your bill and enter the annual amount.
Your supplier will have your historical consumption.
Your supplier will have your historical consumption.
Emission factors:
Natural Gas: 11.9 lbs CO2 / therm
Oil: 22.38 lbs CO2 / gallon
Propane: 12.68 lbs CO2 / gallon

Gas conversion:
1 ccf ≈ 1.037 therms
1 mcf ≈ 10.37 therms
Total Heating Emissions 0
4 Electricity
Choose which fuel source you want to base your electrical generation on. Either find your subregion on the eGrid map or use natural gas or coal.
Enter your annual electricity consumption from your utility bill.
Total Electricity Emissions 0

Annual Total Carbon Footprint

Your estimated total annual emissions

0 lbs. CO2/year
Emissions Breakdown

Driving

Heating

Electricity

Food

eGRID Subregions Map

Use this map to locate your electricity subregion, then select it above.

Map of eGRID Subregions