Fuel Calculators: MPG & Cost

Compare gas prices, calculate MPG, estimate driving range, track fuel cost, check fuel weight, and use gear, tire, pressure, and airflow tools in one app.

Fuel Calculators: MPG & Cost brings together practical fuel economy tools and garage calculators in one app. It is built for drivers, commuters, DIY mechanics, tuners, road trip planners, and anyone who wants fast answers without digging through spreadsheets.

• Use a fuel cost calculator to estimate trip cost, total fuel spend, and cost per mile or cost per kilometer.
• Compare gas prices or fuel prices side by side and see the real difference over the distance you drive.
• Calculate driving range from the fuel in your tank and your current fuel economy.
• Convert MPG to L/100km, km/L, and related fuel economy formats in seconds.
• Track odometer-based fuel cost, fuel efficiency, and price per gallon or price per liter.
• Estimate fuel weight for common fuel types including gasoline blends, diesel, and avgas.
• Run a fuel efficiency calculator for both imperial and metric measurements.
• Check gear ratio, ring and pinion ratio, and gear selector math for quick garage work.
• Use the tire size calculator to compare dimensions, sidewall height, diameter, and circumference.
• Convert injector or flow rate values after pressure changes.
• Convert pressure units and airflow units without jumping between different apps.
• Search the calculator list to get to the tool you need faster.
• Most calculators remember the last values you entered on iPhone and iPad.
• Use built-in help and offline reference data when you need a quick refresher.
• Share results by email on supported calculator screens.

Why people keep this app on their phone:

• It covers everyday fuel math and shop math in one place.
• The tools are direct, fast, and made for repeat use.
• Imperial and metric workflows are both supported.
• The layout is simple enough for quick use at the pump, in the driveway, or in the garage.
• It works well for personal vehicles, project cars, motorcycles, and general fuel planning.

Great for:

• Fuel cost tracking
• Gas mileage checks
• MPG calculator needs
• Road trip fuel planning
• Vehicle range estimates
• Tire and gearing checks
• Pressure and airflow conversions
• DIY automotive reference use