What this tool does
Convert US miles per gallon to L/100km, km/L, UK mpg, and other fuel efficiency units. Type an amount in miles per US gallon (mpg US), choose the units, and the tool converts it to liters per 100 kilometers. It offers 5 fuel economy units and also shows the same amount in the others.
Inputs
- Value: A number.
- From: Choose one: Mile per US gallon (mpg US), Mile per imperial gallon (mpg UK), Liter per 100 kilometers, Kilometer per liter, Mile per liter. Starts as Mile per US gallon (mpg US).
- To: Choose one of the same 5 units as "From". Starts as Liter per 100 kilometers.
How to use
- Enter the amount you want to convert.
- Choose the unit to convert from and the unit to convert to.
- Read the result: the converted amount and the same amount in the other units. It appears once every required field has a valid value.
Worked examples
Conversions from miles per US gallon (mpg US) to liters per 100 kilometers:
- 1 mpg (US) ≈ 235.214583 L/100 km
- 5 mpg (US) ≈ 47.042917 L/100 km
- 10 mpg (US) ≈ 23.521458 L/100 km
- 50 mpg (US) ≈ 4.704292 L/100 km
- 100 mpg (US) ≈ 2.352146 L/100 km
Divide about 235.214583 by the number of miles per US gallon (mpg US) to get liters per 100 kilometers. The factor follows from exact definitions. It has more digits than fit here, so it is shown rounded.
Sources: Mile per US gallon (mpg US): exact by definition. Liter per 100 kilometers: exact by definition.
Limitations
- Converts the unit of a fuel economy figure only. It does not work out fuel cost, trip fuel or a car's real-world economy.
- A US gallon and an imperial gallon are different volumes, so mpg (US) and mpg (UK) are shown as separate units.
FAQs
- Q: How do I convert US mpg to L/100 km?
- A: Divide 235.215 by the mpg (US) figure. 30 mpg (US) is about 7.84 L/100 km.
- Q: How do I convert US mpg to km/L?
- A: Multiply by about 0.4251. 1 mpg (US) is about 0.4251 km/L.
- Q: Why is UK mpg higher than US mpg?
- A: The imperial gallon (about 4.546 liters) is larger than the US gallon (about 3.785 liters). 1 mpg (US) is about 1.201 mpg (UK).
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