Emissions equivalencies
Translate tonnes of CO2e into familiar equivalents for board papers and staff updates, on EPA factors.
What this page is: one calculator that runs in your browser and stores nothing. Sources and limits are on the calculators page; for a linked 42-sheet model use the engineering toolkit.
About this tool
What it does: Translates tonnes of CO2e into familiar equivalents such as cars, homes and trees.
Background: Uses the EPA Greenhouse Gas Equivalencies methodology.
Benefit: Helps communicate scale to boards and staff.
Equivalents = tCO₂e ÷ EPA factor (passenger vehicle 4.29 t/yr, home energy 7.45 t/yr, 0.060 t per urban seedling grown 10 years). Source: EPA Greenhouse Gas Equivalencies Calculator factors, page updated August 2026.
Planning estimate, not engineering design or professional advice. Results depend on your inputs and published factors, and are not a verified inventory, audit, guarantee of savings or net-zero claim. See the terms of use.
Independent planning estimate using published US government factors. Not endorsed by DOE, EPA, NREL or any agency. Not an audit or a verified inventory. See methods.