What is your carbon footprint?
Add your home energy, travel, food and shopping. See your yearly emissions by category, how you compare with your country, and what would cut them most. Every factor is cited.
See an example:
Your footprint
0t CO2e per person
0t CO2e for the home
Fill in a section on the left, or pick an example above. Nothing leaves your browser.
By category
How you compare, per person per year
What if?
Tick changes to see what each one saves on its own and all together.
Every line, with its factor
| Item | Amount / yr | Factor | kg CO2e / yr | Source |
|---|---|---|---|---|
| Total | ||||
Sources and method
How the numbers are worked out
- Every result is kg of carbon dioxide equivalent (CO2e) per year, using 100-year global warming potentials.
- Fuels, cars, flights and transit use the UK government's 2024 factors: direct emissions plus the upstream "well-to-tank" emissions of producing and delivering the fuel.
- Electricity, and electric cars, use your country's average grid intensity from Ember, which is a lifecycle figure. Electric car energy per km is derived from the UK factors (about 0.21 kWh per km for an average car).
- Flights: great-circle distance between the airports plus 8%. Up to 500 km uses the domestic factor, up to 3,700 km short-haul, beyond that long-haul. The radiative forcing option adds the extra warming of emissions at altitude (the UK factors multiply flight emissions by about 1.7); you can turn it off.
- Food uses the average daily footprint of six UK diet groups, scaled to 2,000 kcal a day.
- Spending is converted to US dollars at 2022 rates, brought back to 2022 prices with US consumer prices, and multiplied by US supply-chain factors. These cover US production, so imported goods are likely under-counted.
- Bin-bag weights, boiler efficiency (85%) and heat pump performance (3.0) are this app's assumptions and are labelled where used.
- Not counted: your share of public services, your job, investments, and construction of your home.