The Cool BlockThis CO2 calculator has been custom designed to accompany The Cool Block.

In order to fill it out accurately you will need to have the following information:

  1. Your last few payment statements from your electricity, natural gas and/or heating oil providers.
  2. The average weekly or annual miles driven in each of your household's cars.
  3. The mpg of all your household's cars.
  4. The amount of airplane miles traveled per year. Click here to calculate distances between airports.

Please Note: Calculator totals household usage, not individual usage. If you would like to know your personal calculation, simply divide the final total by number of persons in your household.


Calculate Your Household's Carbon Dioxide (CO2) Emissions

If you are logged in to the Cool Block website, please fill out the Calculator below and save it to your Action Plan; your input data and your results will be saved. If you are on a Cool Block team, we recommend you also print a copy or save a screen shot, and bring it to your Cool Lifestyle meeting.

If you are not logged in, your data is not saved; we recommend you print out a copy of your calculator data.


Javascript must be enabled in your browser preferences. You must use the tab key on your keyboard to tab through each field below in order for the totals to accumulate at the end. Please enter data into the middle column fields and leave a zero if that field does not apply to you.

Please answer the questions below. If any questions do not pertain to your household, simply leave them blank. Enter your data CO2 emissions per year in Lbs.
1. How many gallons of garbage do you put out each week?
An average garbage can holds 32 gallons.
2. On average, what is your household kWh usage per year?
3. On average, how many therms of natural gas do you use per year?
4. On average, how many gallons of propane do you use each year?
5. On average, how many gallons of fuel oil do you use per year?
6. On average, how many miles do you put on your primary car?
300 miles/week or 15,000 miles/year is about average in the United States

Per Week Per Year

7. If you have a second car, enter the number of miles you drive
Per Week Per Year

8. If you have a third car, enter the number of miles you drive
Per Week Per Year

9. What is the average gas mileage for your primary car?
If you're unsure, assume your car gets 22 miles per gallon, which is about average.
10. What is the average gas mileage for your second car?
11. What is the average gas mileage for your third car?
12. Estimate the average number of miles that your household travels by air each year
Your Total Emissions

Typical CO2 output per household per year United States

Based on your current lifestyle practices you are at level out of 10 levels (10 is the best).
My goal is to reduce my annual CO2 emissions by pounds.
If I reach my goal, I will be at level .

Sources used for the calculations are as follows:

US Dept. of Energy, Energy Information Administration

US Dept. of Energy, EIA, Office of Integrated Analysis and Forecasting

US Environmental Protection Agency

Evaluate Your CO2 Level


Annual Average Household (HH)
Pounds of CO2 Emissions

1 80,000 and above
2 70,000-79,999
3 60,00-69,999
4 50,000-59,999 (typical American HH)
5 40,000-49,999
6 30,000-39,999
7 20,000-29,999 (typical German HH)
8 10,000-19,999 (typical Swedish HH)
9 1000-9,999
10 Carbon Neutral (less than 1000)


If you have already taken many Co2 reduction actions, the chart above recognizes this accomplish and has you start at a higher level. While it will be more of an effort to get a 25 percent reduction if you have already done a lot, we encourage you to stretch.

To keep a sense of perspective, doing well in America is all relative given how high our starting point is compared with more environmentally advanced countries like Sweden and Germany. So if you are above 15,000 pounds of annual household Co2 emissions there is still a lot of room for improvement.