The Home Ecological Footprint Calculator measures the amount of biologically productive land and water (in global hectares) needed to supply the resources and assimilate the waste we generate. It may help you identify the environmental impacts of everyday activities and encourage progress towards more sustainable practices.The questions require information about the types and amounts of products and resources you use in your home, enabling you to estimate how many global hectares are required to support your home – in other words, what sort of footprint are you leaving on planet Earth.