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

Fuel Consumption Conversion Calculator Sign

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 a petrol conversion calculator 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?

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, this converter will also include the step-by-step solving of the 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.

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Fuel Consumption Conversion Calculator

Convert between miles per gallon and liters per 100 kilometers, or create a custom fuel conversion chart.

Special Instructions

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Selected Data Record:

A Data Record is a set of calculator entries that are stored in your web browser's Local Storage. If a Data Record is currently selected in the "Data" tab, this line will list the name you gave to that data record. If no data record is selected, or you have no entries stored for this calculator, the line will display "None".

DataData recordData recordSelected data record: None

Conversion type:

Select the desired conversion option. The calculator will then rename the fields according to your selection. Note that MPG stands for Miles Per Gallon, and KM stands for Kilometers.


Fuel units to convert from:

Enter the fuel consumption units to convert from the type listed on in this line.

Round:Round to:Round to:Round to:

Round conversion units:

Select the number of places you would like the "to" units rounded to (affects chart rounding as well). If "None" is selected, no rounding will be performed and raw values will be displayed both in the result field and in the chart. Note that you can alter the rounding of the result before or after the conversion.

Liters/100 KMLiters per 100 KMLiters per 100 KilometersLiters per 100 Kilometers:equiv:equivalent:equivalent:

Fuel consumption conversion result:

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

If you would like to save the current entries to the secure online database, tap or click on the Data tab, select "New Data Record", give the data record a name, then tap or click the Save button. To save changes to previously saved entries, simply tap the Save button. Please select and "Clear" any data records you no longer need.

Create Conversion Chart

Fuel consumption conversion chart:

To create a custom fuel consumption conversion chart that you can print out, enter the starting and ending units based on the first type listed in the selected conversion type. Then click the Create Conversion Chart button. This will open a printer friendly window containing your custom fuel consumption conversion table.

StartStartStartingStarting MPG (US)MPG (US)Miles per gallon (US)Miles per gallon (US):

Starting units:

Enter the units you want the chart to start at.

EndEndEndingEnding MPG (US)MPG (US)Miles per gallon (US)Miles per gallon (US):

Ending units:

Enter the units you want the chart to stop at.

Increment:Increment by:Increment by:Increment by:

Increment from units by:

Select the value you want the from units incremented by in the conversion chart.

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Help and Tools


Interactive charts, common fuel conversion formulas, and how to convert MPG to L/100KM.

Interactive Fuel Conversion Charts

Liters per 100km to MPG (US) Table
Range to l/100km
8 l/100km=29.4 mpg
9 l/100km=26.1 mpg
10 l/100km=23.5 mpg
11 l/100km=21.4 mpg
12 l/100km=19.6 mpg
13 l/100km=18.1 mpg
14 l/100km=16.8 mpg
15 l/100km=15.7 mpg
16 l/100km=14.7 mpg
17 l/100km=13.8 mpg
MPG (US) to Liters per 100km Table
Range to l/100km
10 mpg=23.5 l/100km
11 mpg=21.4 l/100km
12 mpg=19.6 l/100km
13 mpg=18.1 l/100km
14 mpg=16.8 l/100km
15 mpg=15.7 l/100km
16 mpg=14.7 l/100km
17 mpg=13.8 l/100km
18 mpg=13.1 l/100km
19 mpg=12.4 l/100km
20 mpg=11.8 l/100km
21 mpg=11.2 l/100km
22 mpg=10.7 l/100km
23 mpg=10.2 l/100km
24 mpg=9.8 l/100km
25 mpg=9.4 l/100km
26 mpg=9.0 l/100km
27 mpg=8.7 l/100km
28 mpg=8.4 l/100km
29 mpg=8.1 l/100km
30 mpg=7.8 l/100km
31 mpg=7.6 l/100km
32 mpg=7.4 l/100km
33 mpg=7.1 l/100km
34 mpg=6.9 l/100km
35 mpg=6.7 l/100km
36 mpg=6.5 l/100km
37 mpg=6.4 l/100km
38 mpg=6.2 l/100km
39 mpg=6.0 l/100km
40 mpg=5.9 l/100km
41 mpg=5.7 l/100km
42 mpg=5.6 l/100km
43 mpg=5.5 l/100km
44 mpg=5.3 l/100km
45 mpg=5.2 l/100km
46 mpg=5.1 l/100km
47 mpg=5.0 l/100km
48 mpg=4.9 l/100km
49 mpg=4.8 l/100km
50 mpg=4.7 l/100km

Conversion Factors Needed to Convert Fuel Consumption Units

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

ConversionFormula (rounded)
Gallons to LitersGallons x 3.7854118
Liters to GallonsLiters x .6241721
Gallons (US) to Gallons (Imperial)Gallons (US) x 1.20095042
Gallons (Imperial) to Gallons (US)Gallons (Imperial) x 0.83267384
Miles to KilometersMiles x 1.609344
Kilometers to MilesKilometers x .6213711922

How to Convert Miles Per Gallon to Liters Per 100KM

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

20 Miles per gallon (US) to Liters per 100 Kilometers Conversion
Kilometers x 3.785411784
Miles per gallon (US) x 1.609344
100 x 3.785411784
20 x 1.609344

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
Kilometers x 3.785411784
Liters per 100 Kilometers x 1.609344
100 x 3.785411784
11.76 x 1.609344
MPG (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 on the feedback form located beneath the calculator.

Adjust Calculator Width:

Move the slider to left and right to adjust the calculator width. Note that the Help and Tools panel will be hidden when the calculator is too wide to fit both on the screen. Moving the slider to the left will bring the instructions and tools panel back into view.

Also note that some calculators will reformat to accommodate the screen size as you make the calculator wider or narrower. If the calculator is narrow, columns of entry rows will be converted to a vertical entry form, whereas a wider calculator will display columns of entry rows, and the entry fields will be smaller in size ... since they will not need to be "thumb friendly".

Show/Hide Popup Keypads:

Select Show or Hide to show or hide the popup keypad icons located next to numeric entry fields. These are generally only needed for mobile devices that don't have decimal points in their numeric keypads. So if you are on a desktop, you may find the calculator to be more user-friendly and less cluttered without them.

Stick/Unstick Tools:

Select Stick or Unstick to stick or unstick the help and tools panel. Selecting "Stick" will keep the panel in view while scrolling the calculator vertically. If you find that annoying, select "Unstick" to keep the panel in a stationary position.

If the tools panel becomes "Unstuck" on its own, try clicking "Unstick" and then "Stick" to re-stick the panel.