About Gas Mileage Calculators
Who builds this site, where its numbers come from and how they're checked.
What This Site Does
Gas Mileage Calculators has one job: help you understand fuel economy. The MPG calculator works out your real gas mileage from a fill-up, in miles and gallons or kilometers and liters. The MPG by make and model section lists the official EPA ratings for 356 current models from 49 makes, with each model's ratings broken down by year, engine and drivetrain, going back as far as 1984.
Fuel cost tools for trips and yearly budgets live on our sister site, FuelPriceCalculator.com, so each site can stay focused on one subject.
How the Numbers Are Checked
Every vehicle rating on this site comes from the U.S. EPA fuel economy file published on fueleconomy.gov. The model pages are generated straight from that file, so no rating is typed in by hand, and each row links to the matching EPA record so you can check it yourself. When the EPA posts an updated file, the pages are rebuilt from it. The ratings on the site right now come from the file downloaded on October 1, 2026.
The calculators use the standard fuel economy formulas, and each one is tested against hand-worked examples before it goes live. Cost results always use the price you enter rather than a national average. If you spot a number that doesn't match the EPA record, let us know and it will be checked and corrected.
Who Builds It
Gas Mileage Calculators was created by Cedrick Reese, founder of ReadyUtilities.com, a retired veteran and web developer who enjoys building free, user-friendly online tools that simplify everyday tasks. My journey began in the early 2000s with affiliate marketing and niche site development, which grew into a passion for creating practical digital utilities and calculators. After retiring, I earned a Computer Systems Technician certificate from UEI College, completed Electro-Mechanical Technologies at Tulsa Welding School, and finished the Carpentry program at Florida State College at Jacksonville. Today, I combine my technical background and craftsmanship by building furniture using traditional woodworking methods, gardening, and developing helpful online tools for users worldwide.
Get in Touch
Questions, corrections and tool ideas are welcome. Use the contact page or email admin@readyutilities.com.