Introduction
This Carbon Footprint Calculator helps you find out how much carbon dioxide (CO₂) your life makes each year. Carbon is a gas that warms our planet, so knowing your number is a good first step.
You just fill in some easy facts about your home, your travel, your food, and your trash. The tool adds it all up and shows your total footprint. It also splits the number by group, so you can see where most of your carbon comes from.
You can pick actions you plan to take, like using LED lights or eating less meat. The calculator then shows how much carbon you could save. It even compares your footprint to the U.S. average, the world average, and the 2050 goal.
Use this free tool to learn, plan, and cut your carbon. Small changes can make a big difference for the planet.
How to use our Carbon Footprint Calculator
Fill in your home, travel, food, and waste details. The calculator shows your yearly carbon footprint, how you compare to others, and ways to cut it down.
Pick your language from the language menu so the tool reads in the words you know best.
Choose your units to see results in pounds of CO₂ or tons of CO₂e per year.
Enter your household size, which is how many people live in your home.
Type your electricity use in kWh per month. Check your power bill to find this number. You can also estimate the price with our Electricity Cost Calculator.
Add your natural gas use in therms per month. Your gas bill shows this, and a Gas Cost Calculator can help you track the spending.
Enter your heating oil in gallons per year if you use oil to heat your home.
Set the percent of your power that comes from green sources like wind or solar. If you are thinking about going green, try our Solar Panel Calculator.
Type how many car miles you drive each year.
Enter your car's fuel economy in MPG. Use a higher number for cars that go farther on less gas. Our Gas Mileage Calculator and Fuel Cost Calculator can help with this.
Add your electric vehicle miles per year if you drive an EV.
Type your flight hours per year. This is the total time you spend on planes. You can check trip length with our Flight Time Calculator.
Enter your public transit miles per year, like bus or train trips.
Pick your diet type, from meat-heavy down to vegan. To plan your meals, see our Calorie Calculator and Macro Calculator.
Set the percent of food you throw away instead of eating.
Enter the percent of food you buy that is local or in season.
Type how many trash bags you toss each week.
Set the percent of your waste that you recycle.
Choose yes or no for whether you compost food scraps. A Compost Calculator can help you make the most of those scraps.
Enter how much you spend on goods like clothes and gadgets each month.
In the Reduction Actions tab, check the steps you plan to take. The summary shows your new, lower footprint.
Click Calculate to see your results, or click Reset to start over.
What Is a Carbon Footprint?
A carbon footprint is the total amount of greenhouse gases you put into the air. These gases, like carbon dioxide (CO₂), come from things you do every day. They trap heat in the sky and help warm the planet. We measure a carbon footprint in pounds or tons of CO₂ each year.
What Adds to Your Footprint?
Many parts of daily life make carbon emissions. The four biggest are:
- Home Energy: The power and gas you use to light, heat, and cool your home. See how much heat your home loses with our Heat Loss Calculator.
- Transportation: Driving cars, riding buses or trains, and flying on planes. You can study car wear over time with our Car Depreciation Calculator.
- Food & Diet: What you eat. Meat, like beef, makes more carbon than plants do. Wasted food adds even more.
- Waste & Goods: The trash you throw away and the new things you buy, like clothes and gadgets.
Why It Matters
The average person in the United States makes much more carbon than the world average. Too much carbon causes climate change, which leads to hotter days, bigger storms, and rising seas. By the year 2050, experts say each person should aim for a much smaller footprint to help keep the planet safe.
How You Can Cut Your Footprint
Small changes add up. You can switch to LED light bulbs, lower your heat in winter, or use green power. You can drive less and take the bus or train more. Eating less meat, wasting less food, and recycling more all help too. Each step makes your footprint smaller and keeps the air cleaner for everyone.
Want to track your health while you make greener choices? Try our BMI Calculator or TDEE Calculator to learn more about your body and daily energy needs.