Carbon Footprint

This calculator compares your yearly total with three benchmarks: about 2 tons as a sustainable target, 4.5 tons as the global average, and 15 tons as a typical US or UK level. Your result lands in one of those bands, so you can see how far you are from each.

It adds five parts. Driving counts 0.0004 tons per mile, and each short or medium round-trip flight adds 0.8 tons. Diet adds 1.5 to 3.3 tons and home energy 1.0 to 3.5 tons. A fixed 2.0 tons covers shared services such as infrastructure and goods.

At roughly 400 grams of CO2 per mile, the default 8,000 miles a year comes to about 3.2 tons, and 12,000 miles comes to 4.8 tons. The tool uses one average figure for every vehicle, so an efficient hybrid will emit less and a large truck will emit more.

Yes. The tool assigns about 1.5 tons a year to a vegan diet, 1.7 to vegetarian, 2.5 to average meat eating, and 3.3 to eating meat almost daily. Moving from heavy to average meat saves about 0.8 tons a year, the same as driving 2,000 fewer miles.

The calculator divides your total by 22 kg, the CO2 one mature tree absorbs in a year, and rounds up. With the default inputs of 8,000 miles, two flights, and average diet and home use, that gives about 514 trees. Young trees absorb less, so this shows the size of the gap.

It is an estimate built on averages, not a measured audit. This one does not read your electricity bill, car model, or flight distance, so real numbers can be higher or lower. Use it to compare habits and see which change cuts the most, such as flying less or eating less meat.