Improving your gas mileage day by day

MilesGallon.com - Gas Mileage Calculator

Find Out Your Real MPG and Learn How to Improve It

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Calculate Your Gas Mileage

To improve your gas mileage you first need to know what your current gas mileage is or you will not know if it got any better.

Find out the gas mileage of your car by entering the distance you have travelled (from past and present odometer reading) and the amount of fuel that used in the form below. Give us the current fuel price as well and we'll calculate your cost per mile at the same time.


Gas Mileage Calculator

Distance: miles (switch to kilometers)
Gallons of fuel used: gallons (US) (switch to liters)
Price per gallon (optional): $/gallon

Check to use Imperial/Canadian Gallons

Your gas mileage is 8 miles per US gallon and your fuel cost is $0.5 / mile. I bet you have a fuel leak!

Your fuel consumption in some other units

  • 29.4 litres / 100km
  • 12.5 gallons (US) per 100 miles
  • 9.6 miles per imperial gallon (UK/Canada)
  • 2.94 litres per swedish mile (10km)
  • Your carbon footprint is 2.43 pounds of CO2 per mile (2.78 for diesel fuel)
  • Driving from New York City to Los Angeles you would have to use about 349 gallons of gas costing you $1395 in gas. During the trip you would release 4860 pounds of CO2 into the atmosphere.
  • Calculate Total Cost Per Mile

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Find out how many gallons your vehicle will use on a trip of x miles

Going for a road-trip it can be good to know how much fuel you'll need, so you can plan when to refuel and how much the trip will cost. This companion calculator lets you find out how many gallons your vehicle will use on a trip of x miles.

More Fuel and Automotive Calculators

Todays Oil Price

The crude oil price is an early indicator of changes to your local gas price. Be prepared when the price goes up at a gas pump near you!

How To Improve Your Gas Mileage

  1. Keeping the speed between 30 and 60 mph when possible lets the engine run at the optimal rate and improves your gas mileage.
  2. Avoid idling, especially if you have a large engine.
  3. Try not to accelerate and break all the time (even though it's fun), driving at even speed can increase gas mileage with as much as 30%.
  4. Keep your car and especially the engine in good shape and it will use less fuel
  5. Obviously fixing any fuel leaks will improve your gas mileage and prevent the ground from getting polluted.
  6. Check the tyre pressure regularily. Too low pressure will decrease your fuel mileage
  7. If you live in en area with freezing winter temperatures using an engine block heater before starting will improve fuel mileage and decrease strain on the engine.
  8. Buy a more fuel efficient car, or use a motorcycle if you're alone. Motorcycles often use only half as much fuel as a car but that's easy to forget when it's raining.
  9. Diesel engines use less fuel than the equivalent gas powered engine but may not be your ideal choice for a variety of other reasons.
  10. Walk or take the bike, you will get exercise at the same time. Driving short quarter mile trips uses a lot of fuel and is hard on the engine.

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Browse our collection of gas saving articles, read about how tonnocover improves truck mpg or if you're a gassavers forum member use the gassavers garage gaslog calculator to convert your gas mileage from European or Canadian units before entering them into the gas log.

If that's not enough read about common gas mileage myths

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