To find your transportation carbon footprint, enter commuting info. examples shown below:

Annual Miles:  I need help calculating

Type of fuel vehicle uses: GasolineDieselCalifornia Gas (E5.7)Gasohol (E10)Flex Fuel (E85)Ethanol (E100)Biodiesel (B100)CNG

Average Mileage (miles/gallon):  Find yours here