Calculate your annual carbon footprint covering diet, transportation, home energy, and consumption — the four categories accounting for ~92% of personal emissions. The average American produces 16 tCO₂e/year vs. the global average of 4.7 tCO₂e.
Aligned with EPA emission factors · Reviewed by Iris Halverson, PE
62
tCO₂e/year (household)
15.5
tCO₂e/year (per person)
~720
trees to offset
The 8 highest-impact lifestyle changes ranked by annual savings.
"Most people overestimate the impact of recycling and underestimate the impact of diet and flying. Focus on the big levers first."
Based on 14,800+ calculations since January 2025.
Household size and country/region.
Diet type, car miles, and vehicle type.
Short, medium, and long-haul round trips.
Electricity usage and heating type.
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Our emission factors and data sources.
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Household Total
--
tCO₂e/year
Per Person
--
tCO₂e/year
Trees Needed
--
to offset
Annual savings per action
| Action | Savings |
|---|
EPA-aligned methodology reviewed by Iris Halverson, PE.
We estimate footprints across diet, transportation, home energy, and consumption — ~92% of individual emissions.
| Diet | tCO₂e/yr |
|---|---|
| Heavy meat | 3.3 |
| Omnivore | 2.5 |
| Pescatarian | 2.0 |
| Vegetarian | 1.7 |
| Vegan | 1.5 |
Developed by Iris Halverson, PE. Technical review by Theo Marchetti.
⚡ AI-assisted drafting; validated June 1, 2026.
Learn about emissions and how to reduce them.