Fuel Consumption Conversion Calculator
to Convert MPG and Liters per 100KM

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The Fuel Consumption Conversion Calculator on this page will instantly convert between miles per gallon and liters per 100 kilometers.

This calculator was created in response to the following sent to me by a site visitor from Canada:

Do you have or could you do one that could tell me what the Miles per Gallon mileage is on new car listings, when it only says the Litres per 100 kilometers, or the other way around?

Thanks to your request, I do now.

This fuel economy conversion calculator will convert liters per 100 kilometers to miles per gallon (US and Imperial) as well as convert miles per gallon to liters per 100 kilometers.

Plus, unlike other online gas mileage conversion calculators, the calculator on this page will also include the step-by-step conversion formula in the generated results.

And finally, the calculator also allows you to create a custom fuel consumption conversion chart that you can print out and take with you when you go car shopping.

Conversion Factors Needed to Convert Fuel Consumption Units

In order to convert from one popular fuel consumption unit to another, here are the conversion factors you will need to do the conversions manually:

Fuel Consumption Related Conversion Formulas

Conversion Formula (rounded)
Gallons to Liters Gallons x 3.7854118
Liters to Gallons Liters x .6241721
Gallons (US) to Gallons (Imperial) Gallons (US) x 1.20095042
Gallons (Imperial) to Gallons (US) Gallons (Imperial) x 0.83267384
Miles to Kilometers Miles x 1.609344
Kilometers to Miles Kilometers x .6213711922

How to Convert Miles Per Gallon to Liters Per 100KM

Here is the formula and an example showing how to manually convert 20 MPG to L/100KM:

20 Miles per gallon (US) to Liters per 100 Kilometers Conversion
Liters per 100 Kilometers =
Kilometers x 3.785411784
Miles per gallon (US) x 1.609344
Liters per 100 Kilometers =
100 x 3.785411784
20 x 1.609344
Liters per 100 Kilometers =
378.5411784
32.18688
Liters per 100 Kilometers = 11.760729166666666

How to Convert Liters Per 100 Kilometers to MPG

Here is the formula and an example showing how to manually convert 11.76 L/100KM to MPG -- which is the reverse of the conversion above:

11.76 Liters per 100 Kilometers to Miles per gallon (US) Conversion
Miles per gallon (US) =
Kilometers x 3.785411784
Liters per 100 Kilometers x 1.609344
Miles per gallon (US) =
100 x 3.785411784
11.76 x 1.609344
Miles per gallon (US) =
378.5411784
18.925885440000002
Miles per gallon (US) = 20.001240079365076

Please see the fuel conversion factor chart further up this page for the factors needed to convert other less popular fuel consumption units. If there is a fuel consumption unit type you would like to see included in this calculator, please let me know.

With that, let's use the Fuel Consumption Conversion Calculator to convert between miles per gallon (US), miles per gallon (UK), and liters (or litres) per 100 kilometers.

Fuel Consumption Conversion Calculator
Calcy sign introducing Fuel Consumption Conversion Calculator


Instructions: Select the fuel consumption rating you want to convert from and the rating you want to convert to.

Next enter the number of units for the fuel consumption rating you are converting from, then click the "Convert Fuel Consumption Units" button.

Mouse over the blue question marks for a further explanation of each entry field. More in-depth explanations can be found in the glossary of terms located beneath the Fuel Consumption Conversion Calculator.

Help
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To
Miles per Gallon (US) to Liters per 100 KM Conversion
Help Enter Miles per gallon (US):
Help Liters per 100 KM rounded to places:
Help from to increment by

Fuel Consumption Conversion Calculator Glossary of Terms

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From column: Click to select the fuel consumption unit measurement you want to convert from. This will load the proper text and conversion formula into the converter.

To column: Click to select the fuel consumption unit measurement you want to convert to. This will load the proper text and conversion formula into the converter.

Enter "From" units: Enter the fuel consumption units listed in bold on in this line.

"To" units result: This is the fuel consumption units converted into the type listed in bold on this line. Note that you can alter the rounding of the result before or after the conversion.

Printer Friendly Fuel Conversion Chart button: If you would like to print out a custom fuel conversion chart to take with you while car shopping, select the consumption unit you would like in the left hand column of the chart, enter the desired range of units, and select the number to increment each chart row. Clicking the button which will create and display the chart in a new, printer friendly window.

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