Work out roughly how much greenhouse gas your life produces in a year, and see which part of it actually matters. The calculator runs entirely in your browser: nothing is sent anywhere, and nothing is stored.
Fill in what you know and leave the rest at zero. Even rough numbers from an electricity bill and a week of travel give you a useful picture, because footprints are usually dominated by two or three things rather than spread evenly.
How this is calculated
Everything below is per person per year, in kilograms of CO₂ equivalent (CO₂e), which counts methane and nitrous oxide alongside carbon dioxide. Home energy is divided by the number of people living with you. This is an estimate meant for comparison and for deciding what to change, not an audit.
What | Factor used | Source |
|---|---|---|
Electricity | India 713 g/kWh · US 369 · UK 207 · EU 242 · France 56 · world 480 | Ember / IEA grid intensity, 2024 |
LPG cylinder (14.2 kg) | 42.3 kg each | 2.98 kg CO₂e per kg LPG, DEFRA 2024 |
Piped natural gas | 2.03 kg per m³ | DEFRA 2024 |
Car | Petrol 192 g/km · diesel 171 · CNG 157 · hybrid 120 · electric 0.17 kWh/km on your grid | DEFRA 2024, average car |
Motorcycle · bus · rail | 103 · 102 · 35 g per passenger-km | DEFRA 2024 |
Flights (return, economy) | Domestic 295 kg · regional 453 kg · long-haul 1,776 kg | DEFRA 2024 incl. high-altitude effects |
Food | Meat-heavy 3,300 kg → vegan 1,050 kg | Scarborough et al. 2014; Poore & Nemecek 2018 |
Everything else | 800 · 1,500 · 2,500 kg | Consumption-based footprint studies, Our World in Data |
Comparisons | Country averages; 2.3 t target for 2030 | Our World in Data; UNEP Emissions Gap Report |
Reading your result
The world average is about 4.7 tonnes of CO₂e per person per year. India averages near 2 tonnes, the United Kingdom about 6.5 and the United States close to 15. The figure that matters most is the 2.3 tonnes per person that the 1.5 °C pathway implies for 2030 — the line the comparison chart marks.
Two patterns show up for almost everyone. Flying is lumpy: a single long-haul return trip can outweigh a year of careful choices everywhere else. Home electricity depends as much on where you live as on what you do, because a kilowatt-hour in France carries a tenth of the emissions of one in India or South Africa.
Where to go next
If you want to understand the accounting behind these numbers, our Carbon Footprint and Carbon Accounting course covers how organisations measure the same thing at scale, and the ESG course puts it in a reporting context. For practical changes, browse environmental topics or the directory of sustainable products and services.