CarbonFootprint.com Calculators

CarbonFootprint.com offers a quick estimate and the free, no-account Sustrax Vita detailed calculator. Use one reporting period for bills, annual mileage, flights and spending; household energy is shared between occupants, and the result is tonnes of CO2e per person. The full route accepts energy in kWh or bill amounts and flight routes/cabin choices. Country defaults matter: unsupported countries can use UK figures. Its FAQ describes an aviation radiative-forcing multiplier of about 1.9, while the full calculator also includes fuel-supply and electricity-loss emissions. National consumption averages can include public infrastructure outside the personal worksheet's scope, so compare results on the same basis. Optional carbon-credit purchases are separate from calculating the estimate.