Estimate your annual CO₂ emissions from transportation, home energy, and diet.
Stop doing complex calculations by hand or searching for formulas. Carbon Footprint Calculator lets you estimate your annual co₂ emissions from transportation, home energy, and diet in seconds with a clean, easy-to-use interface. Enter your values and get instant, accurate results along with step-by-step breakdowns where applicable.
The average American produces about 16 tonnes of CO₂ equivalent per year — one of the highest in the world. The global average is around 4 tonnes/person/year. To limit global warming to 1.5°C, the IPCC suggests all people need to reach a personal carbon footprint of under 2.5 tonnes/year by 2030. Transportation and home energy are typically the largest contributors for individuals.
The highest-impact actions are: (1) Fly less — a single transatlantic flight can emit 1–2 tonnes CO₂. (2) Switch to an EV or drive less. (3) Eat less red meat — beef produces 27kg CO₂/kg of food. (4) Reduce home heating/cooling with insulation and smart thermostats. (5) Switch to renewable electricity. Small changes like LED bulbs help but have far smaller impact than these major choices.
Carbon offsets let you pay to fund projects (like reforestation or renewable energy) that remove or prevent CO₂ emissions elsewhere, to "balance" your own. Quality varies widely — look for verified standards like Gold Standard or Verra (VCS). Offsets are best used for emissions you can't yet eliminate (like occasional flights), not as a replacement for actual reductions. A single mature tree absorbs about 21 kg of CO₂ per year.