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How to convert mpl to mpg

Updated February 21, 2017

A vehicle's fuel economy directly affects the owner's wallet, which makes comparing the gas mileage of our cars a popular water-cooler topic. A vehicle's gas mileage is also a popular topic when researching cars for purchase. To avoid "comparing apples to oranges," it is sometimes necessary to convert between measurement systems. In the United States, the numbers represent miles per gallon (MPG), but in other parts of the world measures such as miles per litre (MPL) may be used. You may also wish to convert if your odometer reads in miles but you buy gasoline by the litre.

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  1. Determine a vehicle's MPL (miles per litre) either from published sources or by calculating it yourself. Divide the number of miles driven by the number of litres consumed to calculate MPL.

  2. Use a calculator or pencil and paper to multiply the MPL value by 3.785, the number of litres in a gallon.

  3. Read the miles per gallon (MPG) value. Example: 6.1 MPL times 3.785 = 23.1 MPG.

  4. Tip

    Most countries that use the metric system provide fuel economy in litres per 100km. To convert L/100Km to MPG, divide 235.2 by the L/100Km value.

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Things You'll Need

  • Calculator or pencil and paper

About the Author

Kelvin O'Donahue has been writing since 1979, with work published in the "Arizona Geological Society Digest" and "Bulletin of the American Association of Petroleum Geologists," as well as online. O'Donahue holds a Master of Science in geology from the University of Arizona, and has worked in the oil industry since 1982.

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