MPG Budget Tool    Use this tool to calculate your fuel consumption, cost and efficiency over a variety of timeframes. You can also calculate your CO2 emissions by weight and volume. Each hyperlinked term can be followed to explanatory notes for that particular item. Miles Per Gallon Price per Gallon (USD) Annual Air Miles Daily Car Use (miles) Daily Cycling Commute (miles) Daily Pedestrian Commute (miles) Weekend Total Car Use (miles) Weekend Total Cycling Commute (miles) Weekend Total Pedestrian Commute (miles)

Per Day Per Week Per Year Gallons Used: 0.0 0 0 Fuel Costs: $0.00 $0.00 $0 Total Miles: 0.00 0.00 0 Carbon Free Miles: 0.00 0.0 0 CO2 emmisions: 0 lbs 0 lbs 0 lbs Cubic Feet of CO2: 0 0 0 Equivalent Volume: 0.0 cubic feet 0.0 cubic feet 0.0 cubic feet Averaged MPG: 0.00 mpg Averaged Cost per Mile: $0.00 Explanatory notes Inputs Calculations Constants Used INPUTS Miles Per Gallon   Use the MPG of your primary vehicle. back to top Price per Gallon (USD)   The price per gallon in US dollars at your local filling station. back to top Daily Car Use (miles)   Enter your typical weekday mileage in your primary vehicle. Include all daily auto use. back to top Daily Cycling Commute (miles)   Use this field to enter daily cycling mileage. Enter only the miles that "replaced" miles you would have otherwise driven in your car. Leave out exercise and recreational miles. back to top Daily Pedestrian Commute (miles)   Use this field to enter daily pedestrian mileage. Enter only the miles that "replaced" miles you would have otherwise driven in your car. Leave out exercise and recreational miles. back to top Weekend Total Car Use (miles)   Enter the total number of miles for the entire weekend. Consider the weekend to be comprised of two days, Saturday and Sunday. back to top Weekend Total Cycling Commute (miles)   Use this field to enter the total weekend cycling mileage. Enter only the miles that "replaced" miles you would have otherwise driven in your car. Leave out exercise and recreational miles. back to top Weekend Total Pedestrian Commute (miles)   Use this field to enter the total weekend pedestrian mileage. Enter only the miles that "replaced" miles you would have otherwise driven in your car. Leave out exercise and recreational miles. back to top Annual Air Miles   Estimate your total air travel miles for the entire year. back to top CALCULATIONS Gallons Used   This includes both the gas used in your primary vehicle and the gas consumed in air travel. A figure of 20mpg per passenger was used as a rough estimate of airline travel. See the note on constants for more on figures used in this calculation. back to top Fuel Costs   This includes both the gas used in your primary vehicle and the gas consumed in air travel. A figure of 20mpg per passenger was used as a rough estimate of airline travel. See the note on constants for more on figures used in this calculation. back to top Total Miles   Your total commuted miles by all forms of travel. back to top Carbon Free Miles   The number of miles you commuted without burning fossil fuels. Includes pedestrian travel and cycling. back to top CO2 emissions   This is the weight in pounds of CO2 gas you introduced into the atmosphere within the calculated timeframe. back to top Cubic Feet of CO2   This is the number of cubic feet of CO2 gas you introduced into the atmosphere within the calculated timeframe. back to top Equivalent Volume   A comparable volume to the volume of your CO2 emissions within the calculated timeframe. Comparison in non-standard units: phonebooths, shipping containers, swimming pools...etc... back to top Averaged MPG   Your total traveled miles by all forms of transport, divided by your total fuel consumption. If you travel more carbon-free miles you can increase your overall MPG. back to top Averaged Cost per Mile   Your total fuel costs by all forms of transport, divided by your total mileage by all forms of transport. If you travel more carbon-free miles you can lower your overall cost per mile. back to top CONSTANTS Air Passenger MPG   For air travel we can divide up the total flight fuel use among the many passengers. One hundred people sharing 1,000 gallons of fuel to travel 500 miles results in a passenger MPG of 50. Each passenger consumes 10 gallons to travel 500 miles. Though some boast of perfectly packed planes getting 35 to 50 Passenger MPG we use a more likely figure of 20 Passenger MPG for air travel. back to top Density of CO2 Gas   The density of CO2 gas at sea level is 1.97 kg / m3. This yields a conversion of 0.1229 lbs / ft3. back to top Pounds of CO2 per gallon burned   Using figures provided by the EPA it is assumed that each gallon of gasoline burned produces 19.4 pounds of CO2. The figure is slightly higher for diesel fuels. back to top Volume of a Phonebooth   I use 2ft X 2ft X 7ft = 28 ft3. back to top Volume of a Shipping Container   A large shipping container is assumed. L = 40 ft, W = 8 ft, H=8 ft => 2,560 ft3. back to top Volume of an Olympic Sized Swimming Pool   An Olympic pool has dimensions 50 m by 25 m and 2 m deep. V = 2500 m3 = 88218 ft3. back to top Volume of The Goodyear Blimp   The Goodyear Blimp has a volume of 202,700 cubic feet. back to top Volume of The Hindenburg   The Hindenburg was 800 feet long with a diameter of 135 feet. The total volume of the Hindenburg was 7,062,000 cubic feet. back to top