Fuel economy converter

Enter your fuel economy and choose the units. The answer updates as you type.

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Value

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Converted value

Precision and other units

Decimals, fractions and scientific notation work here.

Significant digits

Send the displayed number to the notation converter in this tab. Units stay here.

Fuel consumption and distance per fuel are reciprocals. A higher mpg or km/L means less fuel used; a lower L/100 km means less fuel used. Zero has no finite reciprocal.

The same value in other units
Unit	Value

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Updated 2026-09-19

How to convert fuel economy

Fuel consumption and distance per fuel are reciprocals. A higher mpg or km/L means less fuel used; a lower L/100 km means less fuel used. Zero has no finite reciprocal.

The formula divides a fixed distance-and-volume factor by the input when crossing between consumption and economy.

Next: Volume converter

A worked example

20 kilometers per liter gives 100 ÷ 20 = 5 liters per 100 kilometers.

Next: Length converter

Before you use the result

Displayed values are rounded; extra digits do not make your measurement more accurate. Fuel consumption and distance per fuel are reciprocals. A higher mpg or km/L means less fuel used; a lower L/100 km means less fuel used. Zero has no finite reciprocal.

Next: Fuel flow rate conversion calculator

kilometers per liter to liters per 100 km: reference values

kilometers per liter	liters per 100 km
1	100
10	10
100	1

Calculated with the same conversion as the tool above.

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