To estimate your footprint we do some number crunching using data from the likes of the World Bank and Climate Watch. We take average CO2 emissions per person from the country that you live in and then adjust that based on your answers to our questions.
Our calculator takes into account other greenhouse gases such as methane and nitrous oxide, as well as carbon dioxide. We also adjust to make sure emissions are assigned to the country in which the goods and services are consumed, not produced. We think it’s fairer and more accurate that way.
The four questions we ask (country of residence, flying habits, driving habits, diet) help us get a pretty accurate view of your emissions. We could ask you more about your lifestyle but the accuracy benefits would be minimal and we don’t want to burden you with too many questions. We hope we have found the right balance between accuracy and simplicity.