Calculate the cost savings and environmental impact of carpooling.
Start with your values, or try a preset.
Enter Distance of the trip (miles), Average gas price (USD per gallon), Your car's fuel efficiency (miles per gallon), Number of riders (including yourself), and CO2 emissions per gallon of gas (pounds) in the units shown.
Read Gallons of Gas Used, Total CO2 Emissions, Total Trip Cost, CO2 Emissions per Person, and Cost per Person in the results panel. Results update as you change the inputs.
Choose a preset to load an example, then adjust the values for your situation.
See the inputs and their calculated results.
Distance of the trip (miles): 10; Average gas price (USD per gallon): 3.5; Your car's fuel efficiency (miles per gallon): 25; Number of riders (including yourself): 2; CO2 emissions per gallon of gas (pounds): 20
Gallons of Gas Used: 0.4 gallons; Total CO2 Emissions: 8 pounds; Total Trip Cost: 1.4 USD; CO2 Emissions per Person: 4 pounds; Cost per Person: 0.7 USD
Distance of the trip (miles): 50; Average gas price (USD per gallon): 4; Your car's fuel efficiency (miles per gallon): 30; Number of riders (including yourself): 3; CO2 emissions per gallon of gas (pounds): 20
Gallons of Gas Used: 1.666666667 gallons; Total CO2 Emissions: 33.33333333 pounds; Total Trip Cost: 6.666666667 USD; CO2 Emissions per Person: 11.11111111 pounds; Cost per Person: 2.222222222 USD
Distance of the trip (miles): 100; Average gas price (USD per gallon): 3.75; Your car's fuel efficiency (miles per gallon): 20; Number of riders (including yourself): 4; CO2 emissions per gallon of gas (pounds): 20
Gallons of Gas Used: 5 gallons; Total CO2 Emissions: 100 pounds; Total Trip Cost: 18.75 USD; CO2 Emissions per Person: 25 pounds; Cost per Person: 4.6875 USD
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