Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Carbon Footprint
Car Carbon Calculator
Estimate annual CO₂ emissions from a passenger car given your annual mileage, fuel type, and fuel efficiency. Returns kilograms of CO₂ per year.
Fill in the required fields to see your result.
Carbon Footprint
Car Emissions Calculator
Calculate the CO₂ emissions of any petrol or diesel car journey based on fuel efficiency, distance, and the number of passengers sharing the ride. Perfect for comparing routes or travel modes.
Fill in the required fields to see your result.
Key differences
| Car Carbon Calculator | Car Emissions Calculator | |
|---|---|---|
| Category | Carbon Footprint | Carbon Footprint |
| Inputs required | 3 | 4 |
| Result | Annual car CO2 emissions (kg CO2) | CO2 Emissions per Person (lbs CO2) |
| What it does | Estimate annual CO₂ emissions from a passenger car given your annual mileage, fuel type, and fuel efficiency. Returns kilograms of CO₂ per year. | Calculate the CO₂ emissions of any petrol or diesel car journey based on fuel efficiency, distance, and the number of passengers sharing the ride. Perfect for comparing routes or travel modes. |