I'm developing a multiple level sustainability certification model for the insurance industry and they would like the reporting element to include the type of information that we could get from that type of calculator,,
Conservation International Carbon Footprint Calculator
UN Carbon Footprint Calculator
TerraPass Carbon Footprint Calculator
EPA Carbon Footprint Calculator
i would love to recommend the Cool Climate Calculator....It includes in its calculations the four main categories of household consumption, resulting in an estimate of your carbon footprint that takes into account all the major sources of your personal emissions. The calculator allows you to plug in granular data for each category. For transportation, it asks for your annual mileage from a variety of methods. For housing, it asks for your energy usage from all the major home energy sources.