No sign-up, no app
Free gas calculators
Every calculator runs in your browser and is pre-filled with the current U.S. average of $4.269 per gallon. Change the numbers to match your car and your state — nothing is sent to a server.
Gas Cost Calculator
Estimate the fuel cost of any trip from distance, MPG, and price per gallon.
Open →Cost Per Mile Calculator
See what every mile actually costs you at the pump.
Open →Gas Mileage Calculator
Calculate real MPG from odometer readings and gallons used.
Open →Commute Cost Calculator
Add up daily, weekly, and yearly fuel costs for your commute.
Open →Road Trip Fuel Budget
Plan a multi-leg road trip budget with state-level prices.
Open →Gas Price Converter
Convert between dollars per gallon and cents per liter.
Open →EV vs Gas Cost Calculator
Compare fuel and electricity costs for the same annual mileage.
Open →Use the current price, not a guess
A calculator is only as good as the price you put into it. The default in every tool is the national average for the latest EIA survey week, but your state is what actually matters. Before you run a trip budget, pull your state average and, if you drive in a major metro, the city average — they can differ from the national number by more than a dollar a gallon.