Carbon Footprint Calculator

Welcome to the web's leading carbon footprint calculator

First, please tell us where you live:




Carbon footprint calculations are typically based on annual emissions from the previous 12 months

Enter the period this calculation covers (optional):

from to


Next, select the appropriate tab above to calculate the part of your lifestyle you are most interested in, e.g. your flights.

Or, visit each of the tabs above to calculate your full carbon footprint.


Following your calculation, you can offset / neutralise your emissions through one of our climate-friendly projects.


Sources of our calculations

The calculations for primary emissions are based on conversion factors sourced from:

  • Department for Environment, Food and Rural Affairs (DEFRA) - UK
  • World Resource Institute (WRI) Greenhouse Gas (GHG) Protocol
  • Vehicle Certification Agency (VCA) - UK
  • US Environmental Protection Agency (EPA) - USA
  • US Department of Energy (DOE) - USA
  • Green House Office - Australia
  • Standards Association (CSA) GHG Registries - Canada

The calculations for secondary emissions are based on estimates developed by Carbon Footprint to illustrate the impact on the environment from your day-to-day activities. Your actual secondary footprint may in reality be either lower or greater than that estimated here. Your total carbon footprint is the sum of your primary and secondary emissions.

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