Here is the formula for calculating your household’s annual carbon footprint.
Electricity: Annual total kWh x 20 =
Natural gas: Annual total Mj x 1.2 =
LPG (inc BBQ gas): Annual total litres x 32 =
Petrol: Annual total Litres x 48 =
Diesel: Annual total Litres x 54 =
Air travel: Annual total km x 26 =
If you use an open wood fire: 16000
If you don’t recycle your waste such as paper bottles cans and packaging: 16000
If you do not compost your garden waste: 8000
Annual household expenses
(EXCLUDING power travel food rent/mortgage and savings but including everything else): $ x 10
Food: Number of people in household x 90000
TOTAL: (Add up all the above amounts)
Divide by 20000 to convert TOTAL to tonnes of CO2-equivalent emissions per annum