Emission factor

The use of emission (or conversion) factors allows organisations and individuals to calculate carbon emissions from a range of activities, including energy use, water consumption, and transport activities.

For instance, a conversion factor can be used to calculate the amount of carbon emitted as a result of burning a particular quantity of oil in a heating boiler. Emission factors can be found in various national databases and bespoke databases developed by technical specialists. A list of databases is available on the GHG Protocol website: