Carbon Footprint Calculator
Estimate your annual CO₂ emissions from driving, flying, electricity and gas heating — with tree offset count.
Annual footprint (tonnes CO₂)
13.20
Breakdown
- Driving (t CO₂)
- 3.80
- Flying (t CO₂)
- 4
- Home energy (t CO₂)
- 5.40
- Trees needed to offset
- 631
- % of world average (4.7 t)
- 282
Last updated:
FAQ
What is a sustainable carbon footprint?
Climate scientists estimate ~2.3 tonnes CO₂ per person per year by 2030 to stay under 1.5 °C warming. The US average is about 14.4 t — most of it from driving, flying and home energy.
How many trees offset a tonne of CO₂?
A mature tree absorbs roughly 21 kg of CO₂ per year, so one tonne needs ~48 trees growing for a year — or one tree for 48 years.
Which single change cuts the most emissions?
For most people, one fewer long-haul round-trip flight: a single transatlantic round trip emits 2–3 tonnes of CO₂, a full year of driving for an efficient car.
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