Welcome to our carbon foorprint calculator. A usage note: some of the field boxes are touchy. If you encounter any errors, be sure to reset each value, as well as the total. You may need to refresh the page as well. The form can act up if you change your answers too many times.

Enter the annual values for your energy use in the boxes below, such as the number of gallons of heating oil burned per year, or the mileage of your vehicle and the annual total number of miles driven. The input boxes for hotel nights and meals are intended to reflect either an annual total for nights and meals eaten out or they can be used for a specific trip, convention or business travel.

For details on how we calculate our numbers, visit our calculations page.