Fuel Economy Converter
Convert fuel economy between mpg (us), liters per 100 km, kilometers per liter.
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What this tool does
Convert fuel economy between mpg (us), liters per 100 km, kilometers per liter. MPG uses US gallons. Liters per 100 km is reciprocal fuel consumption; zero cannot be reciprocated.
How to use the Fuel Economy Converter
- Enter or select value.
- Enter or select from unit.
- Enter or select to unit.
- Read the calculated result; change any measurement to compare alternatives.
Formula
km/L=MPG(US)×0.425143707; L/100km=100/(km/L)
- value
- Value
- from
- From unit
- to
- To unit
MPG uses US gallons. Liters per 100 km is reciprocal fuel consumption; zero cannot be reciprocated.
Worked example
For fuel economy converter, the following measurements illustrate the exact method: Value: 1; From unit: mpg; To unit: l-100km.
Inputs
- Value1
- From unitMPG (US)
- To unitLiters per 100 km
Result
- Converted Liters per 100 km235.21
Fuel Economy conversion factors
| Unit | Factor to common base |
|---|---|
| MPG (US) | See offset/reciprocal formula |
| Liters per 100 km | See offset/reciprocal formula |
| Kilometers per liter | See offset/reciprocal formula |
Results explained
- Converted Liters per 100 km
- Converted Liters per 100 km from the formula above. MPG uses US gallons. Liters per 100 km is reciprocal fuel consumption; zero cannot be reciprocated.
Frequently asked questions
Select the source and target units. The Swap control exchanges them, retaining the equivalent converted value.
MPG uses US gallons. Liters per 100 km is reciprocal fuel consumption; zero cannot be reciprocated. The formula and reference table list all supported definitions.
Only units of the same physical quantity are convertible. The selected group's definitions are fixed and do not depend on location.
The formulas use JavaScript double precision. Display rounding can hide trailing digits, but factors are not rounded before computation.
No. Reciprocal consumption calculations require a positive value.