Fuel & Efficiency Calculator
Car Carbon Footprint Calculator
Calculate the annual CO₂ emissions from your vehicle based on your driving habits. See how you compare to the average American driver.
Your Driving
CO₂ per gallon of fuel
Annual CO₂ Emissions
pounds of CO₂ per year
In Metric (kg)
4,509
In Tonnes
4.5 T
Trees to Offset
112 trees
vs US Average
+12%
Equivalent to...
Frequently asked questions.
How much CO₂ does a car emit per mile?
A typical gas car emitting at 19.6 lbs CO₂/gallon and getting 28 MPG produces about 0.70 lbs (0.32 kg) of CO₂ per mile. The US average passenger vehicle produces about 4.6 metric tons of CO₂ per year.
How many trees offset a car's emissions?
A mature tree absorbs about 48 lbs (22 kg) of CO₂ per year. To offset 9,000 lbs/year from an average car, you'd need about 188 trees — a small forest. Electric vehicles with renewable charging can cut this to near zero.
Do electric vehicles really have zero emissions?
EVs have zero tailpipe emissions, but electricity generation does produce CO₂. The EPA estimates EVs produce about 2.2 metric tons of CO₂-equivalent/year (including electricity generation) vs 4.6 for average gas vehicles — about 52% less.