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.
Login Information
Required are marked with a *.
Fetching your saved
emissions... Your Stored Emissions Records
Calculate Electricity
Making electricity is the leading cause of industrial air pollution in the U.S. and causes about 2.6 billion tons of carbon dioxide (CO2) emissions annually. When you support BeGreensm carbon offsets, you are supporting clean renewable energy projects like solar, wind and biomass located across the nation.
Enter your average monthly kilo-watt hour (kWh) usage below. This information can be found on your monthly electric utility bill.
| Location | State | Usage | CO2 Emissions | Delete | |
|---|---|---|---|---|---|
| CO2 Emissions from Electricity: | 0 Tons | ||||
| For spacing only | |||||
Calculate Natural Gas
While natural gas is the cleanest of all the fossil fuels, burning it still creates harmful CO2 emissions that contribute to global warming.
Enter your average monthly usage in therms below. This information can be found on your monthly gas utility bill.
| Location | Usage | CO2 Emissions | Delete? |
|---|---|---|---|
| CO2 Emissions Natural Gas: | 0 Tons | For spacing only | |
| For spacing only | |||
| therms per | Tons | Delete row |
Calculate Vehicles
CO2 emissions from transportation make a significant contribution to Green House Gas emissions released into the atmosphere. According to the most recent data, 14% of the world's human activity-related emissions come from transportation.
Enter your average annual mileage and vehicle make and model below.
Don’t see your SUV or Truck listed? Click here to purchase a BeGreensm Driver tag!
| Year | Make | Model | Miles | CO2 Emissions | Delete? | |
|---|---|---|---|---|---|---|
| CO2 Emissions from Vehicles: | 0 Tons | For spacing only | ||||
| For spacing only | ||||||
| Tons | Delete Row |
Calculate Air Travel
About 228 million metric tons of CO2 are emitted per year from jet fuel use. That accounts for about 12% of the total U.S. CO2 emissions created by the transportation sector annually.
Enter the cities you traveled to in the past year.
| Bulk Air Travel | Qty | CO2 Emissions | Delete? | ||
|---|---|---|---|---|---|
| CO2 Emissions from Bulk Flight Air Travel: 0 Tons | |||||
| For spacing only | |||||
| Bulk Flights | Tons | Delete Row |
Calculate Air Travel
About 228 million metric tons of CO2 are emitted per year from jet fuel use. That accounts for about 12% of the total U.S. CO2 emissions created by the transportation sector annually.
Enter the cities you traveled to in the past year.
| From | To | R/T | Qty | CO2 Emissions | Delete? | |||
|---|---|---|---|---|---|---|---|---|
| CO2 Emissions from Air Travel: | 0 Tons | For spacing only | ||||||
| For spacing only | ||||||||
| Tons | Delete Row |
Footprint
Average
Login Information
Please enter your login details below. If you do not have an account, please register. Required a marked with a *.
Registration Information
Please fill in the following fields to register on BeGreenNow. Required a marked with a *.
Saving your emissions
data... 
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