How to use the car carbon footprint calculator
Estimate yearly CO₂ from driving. Enter distance per year, fuel use, fuel in the fields above; the fuel used, co2 emitted are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- km — Distance per year (km)
- l — Fuel use (L/100 km)
- f — Fuel (kg CO₂/L)
Worked example
With distance per year = 15000 km, fuel use = 7.5 L/100 km, fuel = Gasoline, the calculator gives fuel used ≈ 1,125 L; co2 emitted ≈ 2.59875 tonnes.
Frequently asked questions
What is the formula for the car carbon footprint calculation?
Fuel used (L) = km × l / 100. CO2 emitted (tonnes) = [Fuel used] × f / 1000. Here km is distance per year (km), l is fuel use (L/100 km), f is fuel (kg CO₂/L).
What inputs do I need for the car carbon footprint calculator?
You need distance per year in km, fuel use in L/100 km, fuel in kg CO₂/L. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.