Carbon Calculator How big is your carbon footprint?

  1. 1 Calculate
  2. 2 Commit
  3. 3 Contribute

Calculate your footprint

For individuals · housing, travel and consumption

Free · 5 min · 2.3M have taken the test

Calculating for a company? Go to the business calculator

How it works

  1. 1

    Calculate

    Answer questions about housing, travel and consumption. Takes about 5 minutes.

    Answer questions about housing, travel and consumption. About 5 min.

  2. 2

    Commit

    Get personal tips that cut your footprint.

  3. 3

    Contribute Optional

    Support climate projects for what you can't reduce. From $9.

Safe drinking water project in Uganda

Example climate project

Clean water · Uganda

New wells reduce the need to boil water, which protects the forest and cuts emissions.

Free · 5 min · 2.3M have taken the test

Carbon calculation: what is a carbon footprint?

Your carbon footprint is the amount of greenhouse gases your lifestyle causes in a year, measured in tonnes of carbon dioxide equivalent (CO₂e). It includes carbon dioxide and other gases, such as methane, converted into the same unit based on how much they warm the climate.

Your own footprint is only part of the picture. Encouraging friends to cut theirs and taking part in the public debate, for example on a carbon tax, can also bring carbon dioxide levels down.

How the carbon calculator works, and where to start

ClimateHero's carbon calculator asks simple questions in three areas: housing, travel and consumption. It takes about 5 minutes. From your answers it estimates your yearly emissions in tonnes of CO₂e and shows which areas weigh the most for you, so you know where to start. The calculator works for the UK, Ireland, Australia, New Zealand, Canada, the US, the Philippines, India and many other countries.

If you'd like to understand CO2e better, try our CO2 emissions calculator.