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Carbon Footprint Calculator

Estimate your annual carbon footprint in tonnes of CO2 and compare it with national and global averages.

Sources: EPA -- Greenhouse Gas Emissions · Our World in Data -- Carbon footprint of food · European Environment Agency -- CO2 emissions per capita

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Calculate Your Carbon Footprint

Your carbon footprint measures the total amount of greenhouse gases produced by your daily activities, expressed in tonnes of CO2 equivalent. This calculator estimates your personal annual emissions considering transportation, home energy, and food.

How the Calculation Works

The calculator sums emissions from five main sources:

  • Car: 0.12 kg CO2 per km (average gasoline car). Includes direct and indirect emissions from the petroleum supply chain
  • Air travel: 0.255 kg CO2 per km/passenger, multiplied by an average distance of 2,000 km per leg. Flights have the highest impact per single action
  • Natural gas: 2.0 kg CO2 per cubic meter burned
  • Electricity: 0.3 kg CO2 per kWh, average factor for a mixed energy grid (including about 40% renewables)
  • Diet: from 1.5 t (vegan) to 2.5 t (omnivore) per year, based on life cycle analysis of food

In the Global Context

The global average carbon footprint is approximately 4.7 tonnes of CO2 per capita per year. Developed nations average much higher (US: ~15 t, EU: ~6.8 t). To meet the Paris Agreement goal of limiting warming to 1.5 degrees C, per-capita emissions should fall below 2 tonnes by 2050.

How to Reduce Your Footprint

The most effective actions to reduce your personal footprint are: reduce air travel (a single long-haul round trip can equal months of driving), switch to an electric car or use public transport, install solar panels, improve home insulation, and reduce red meat consumption. Every small action counts when multiplied by millions of people.

Frequently Asked Questions

What is the average carbon footprint per person?▼
The global average carbon footprint is about 4.7 tonnes of CO2 equivalent per year. The US average is about 15 tonnes, the EU average about 6.8 tonnes. To meet climate goals, we should get below 2 tonnes per capita by 2050.
How much does a flight pollute?▼
A medium-haul round trip (e.g., New York to Miami, ~2,000 km per leg) emits about 1,020 kg of CO2 per passenger (0.255 kg/km x 4,000 km). A single intercontinental flight can emit 2-4 tonnes of CO2, equivalent to months of driving.
Does diet really affect emissions?▼
Yes, significantly. According to Our World in Data, an omnivore diet produces about 2.5 t CO2/year, a vegetarian diet about 1.7 t, and a vegan diet about 1.5 t. Beef production is the most impactful item, with about 60 kg CO2 per kg of meat produced.