GasCostCalTHE NUMBERS BEHIND YOUR TRIP
About GasCostCal
GasCostCal is a free gas cost calculator that helps US drivers plan trip fuel budgets and split gas money. Enter your distance, fuel economy, fuel price, and number of travelers to see the total and each person’s share.
Fuel prices from EIA
Our weekly fuel prices come from the US Energy Information Administration’s Gasoline and Diesel Fuel Update. Every default price includes its observation date and EIA series identifier. Gasoline prices use all-formulation regular, midgrade, and premium averages; diesel uses the on-highway retail average. Prices include taxes and use dollars per US gallon.
EIA publishes gasoline prices for the United States, PADD regions and subregions, and nine individual states. State selections use their own published price when available, then their PADD region. Diesel has a California state series and regional series. The displayed area identifies the price used for your trip.
Vehicle MPG from FuelEconomy.gov
The optional year, make, model, and version lookup reads EPA combined fuel economy from FuelEconomy.gov’s public vehicle data services. Choose a gasoline or diesel vehicle to apply its combined MPG, or enter your measured MPG for the drive you are planning.
A simple calculation
Fuel needed is total miles divided by MPG. Gas cost is fuel needed multiplied by price per gallon. Round trip doubles the one-way distance; per-person cost divides the total by the people sharing. Results use full precision for calculation and round money to cents for display.
Your trip inputs
Trip calculations run in your browser. Opening the vehicle lookup requests vehicle information from FuelEconomy.gov. You can use the calculator with your own MPG and price.