Calculadora de Pegada de Carbono do Café
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
CO₂_ano_kg = cups/dia × g_CO2/cup × 365 / 1000
About this calculator
This calculator estimates the annual carbon footprint of your coffee consumption, converting daily cups into kilograms of CO₂ emitted. The calculation uses an average of 21 grams of CO₂ per cup, covering from cultivation to brewing. The result is obtained by multiplying the number of cups per day by 21 grams, then by 365 days, and dividing by 1000 to get kilograms.
Coffee's carbon footprint varies by brewing method, origin, and consumption habits. Espresso and drip coffee have different emissions, as do capsules versus traditional ground coffee. This tool uses a general average, but you can refine the calculation by considering the type of coffee you consume.
Use this calculator to become aware of the environmental impact of your morning coffee. Small changes, like opting for organic coffee or reducing waste, can lower your footprint. Ideal for consumers seeking more sustainable habits and wanting to quantify their impact.
Caution: the 21 g CO₂ per cup value is an approximate average. Actual emissions depend on factors like transportation, packaging, and brewing method. Use the result as a reference, not an exact value. Also consider that specialty or fair trade coffees may have different footprints.
Frequently asked questions
What does 'coffee carbon footprint' mean?
It is the total amount of carbon dioxide (CO₂) emitted throughout the coffee life cycle, from cultivation to disposal, including transportation, roasting, and brewing.
Why is the average value 21 grams of CO₂ per cup?
This value is an average from studies considering different brewing methods and origins. It can range from 15 to 30 grams depending on factors like capsule use or instant coffee.
How can I reduce my coffee carbon footprint?
Choose organic and fair trade coffee, avoid capsules, use manual methods like French press, and avoid waste. Buying local beans also helps.
Does the calculator consider coffee type (espresso, drip, etc.)?
No, it uses a general average. For a more precise calculation, you would need to adjust the grams per cup value based on your specific method.
Is the result in kilograms of CO₂ per year?
Yes. We multiply daily cups by 21 g, then by 365 days, and divide by 1000 to get kg/year.