Coffee Carbon Footprint Calculator

About the Coffee Carbon Footprint Calculator

Estimates the yearly carbon footprint of your coffee drinking based on cups per day and preparation type, using typical per-cup emission factors.

How to use

Enter cups per day and your typical preparation, then click Calculate.

Worked example

2 lattes a day → roughly 250 kg CO₂ per year (milk dominates).

How to use this calculator

1. Enter how many cups of coffee you drink each day.
2. Choose or confirm the emissions value used for one cup in the calculator.
3. Run the calculation to estimate your annual CO2 footprint from coffee.

The formula explained

• \(annual CO2\) = the estimated yearly carbon footprint from coffee
• \(\text{coffee per day}\) = the number of cups or servings you drink each day
• \(365\) = the number of days in a year
• \(\text{emissions per cup}\) = the CO2 released for one cup or serving of coffee

Step by step method

1. Start with your daily coffee amount in cups or servings.
2. Multiply that by 365 to turn a daily habit into a yearly total.
3. Multiply the yearly coffee count by the emissions per cup used by the calculator.
4. Read the result as your estimated annual CO2 from coffee.

Worked example

Suppose you drink 2 cups of coffee every day and the calculator uses 0.1 kg of CO2 per cup.

1. Multiply daily coffee by days in a year: \(2 \times 365 = 730\) cups per year.
2. Multiply by emissions per cup: \(730 \times 0.1 = 73\) kg of CO2.

Tips and common mistakes

• Be consistent about what counts as a cup or serving before you enter your number.
• If you drink different amounts on weekdays and weekends, estimate an average daily total.
• Check whether the calculator expects cups, servings, or mugs, since serving size affects the result.
• Remember that add-ins like milk or extras may change the footprint if the tool includes them.

Frequently asked questions