Driving Carbon Footprint Calculator

Burning one gallon of gasoline produces 8.89 kg (19.6 lbs) of CO₂. The average US car (27 MPG, 12,000 miles/year) produces about 3,950 kg (4.35 tons) of CO₂ annually.

Drive a more fuel-efficient vehicle, combine trips, carpool, maintain proper tire pressure, reduce highway speed, use public transit or bike for short trips, and consider switching to a hybrid or electric vehicle.

Transportation accounts for about 29% of US greenhouse gas emissions. A single cross-country flight produces roughly the same CO₂ as 2 months of average driving. But daily commuting adds up to more than occasional flights for most people.