Carbon Footprint Calculator
Calculate your personal annual carbon footprint from flights, driving, diet, and home energy.
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How to use this calculator
- 1
Enter the number of flights you take per year and their typical length.
- 2
Enter how many km you drive and your car type.
- 3
Select your diet type and whether you use renewable energy.
- 4
Enter your monthly household energy use and number of members.
- 5
Review your total footprint and compare it to global averages.
Frequently asked questions
What is an average carbon footprint?
The global average is around 4.8 tonnes of CO₂ per person per year. The UK average is around 5.5t and the US average is around 16t.
How can I reduce my footprint quickly?
The biggest individual levers are flying less, switching to an electric vehicle, eating less meat, and choosing a renewable energy tariff.
Personal Carbon Footprint Calculator
How to use the carbon footprint calculator
Use this carbon footprint calculator to estimate your annual CO₂ emissions from home energy, transport, diet, and consumer spending. Enter your monthly usage in each category above and see your total footprint in tonnes of CO₂ equivalent per year, along with a comparison to your country's average. Free and instant.
How the carbon footprint calculator works
The carbon footprint calculator applies IPCC and DEFRA emission factors to your entered energy, transport, and lifestyle data to estimate annual CO₂e emissions. Country averages are sourced from IEA and World Bank datasets. All calculations run locally in your browser — no personal data is sent to any server.
What is this tool?
Discover your annual carbon footprint covering flights, driving, diet, and home energy. It compares your total CO₂ against world, UK, and US averages.
How to interpret results
A lower number means a smaller environmental impact. Use the tree-planting estimate to understand how much offsetting your lifestyle would require.
Learn more from an authoritative source:
WikipediaHousehold Emissions Calculator
Calculate the carbon emissions and energy costs from your home electricity and gas usage.
Water Usage Calculator
Calculate your household's daily water consumption in litres and your estimated annual water bill.
Recycling Impact Calculator
See the environmental savings from recycling household materials including CO₂, energy, and water.
Carbon Offset Calculator
Calculate the cost to offset a given carbon footprint through different verified offset programmes.
Results are estimates for informational purposes only and do not constitute professional financial, medical, legal, or technical advice. Read full disclaimer →