CalculatorTo begin using the calculator, select an option above and calculate your CO2 emissions in that area.
If you are unclear at any time about your actual numbers, you can use the national averages. Just click the link and they will be auto-entered in the form. Remember that using the national average will only give you a rough estimate of your carbon footprint. You can always grab your electricity bill or check the mileage on your car the next time you return to begreennow.com and enter the actual values.
Learn how these emissions are calculated.
Fetching your saved emissions...
CO2 Emissions
Calculated
How Is This Calculated?
Vehicles
Vehicle emissions are calculated by determining the quantity of gallons of gasoline you use annually and multiplying that number by the amount of kg/CO2/gallon emissions rate. The resultant kg CO2 emitted by you was then divided by 1,000 to determine metric tons of CO2 emitted.
* Once you input your vehicle Year, Make and Model, we look up the average MPG of your vehicle and use the average of highway and city miles to determine the estimated fuel economy of your vehicle.
Electricity
To calculate the CO2 emissions you avoid, we simply multiply your monthly electric usage times the CO2 emission rate of typical system power in your area. The CO2 emissions rate is determined using the EPA's eGRID 2006, Version 2.1, year 2004 database.
Air Travel
When you provide your actual flight data, we are able to accurately calculate your emissions resulting from air travel. We look up your flight Flight leg miles were converted to flight leg kilometers and were broken-out by short hauls (< 452 km), medium hauls (452km < x < 1,600km), and long hauls (> 1,600 km).
The total kms traveled for short, medium and long hauls were then multiplied by the appropriate emissions factor for each haul distance.
Natural Gas
We calculate your emissions from natural gas usage by multiplying the appropriate CO2 factor by the quantity of Therms used annually.
A product of