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Mile Per Gallon (UK) Converters

Convert miles per gallon (UK/Imperial) to and from MPG (US), L/100km, km/L, and other fuel economy units.

What this tool does

Convert miles per gallon (UK/Imperial) to and from MPG (US), L/100km, km/L, and other fuel economy units. Type an amount in miles per imperial gallon (mpg UK), choose the units, and the tool converts it to miles per US gallon (mpg US). It offers 5 fuel economy units and also shows the same amount in the others.

Inputs

  • Value: A number.
  • From: Choose one: Mile per imperial gallon (mpg UK), Mile per US gallon (mpg US), Kilometer per liter, Liter per 100 kilometers, Mile per liter. Starts as Mile per imperial gallon (mpg UK).
  • To: Choose one of the same 5 units as "From". Starts as Mile per US gallon (mpg US).

How to use

  1. Enter the amount you want to convert.
  2. Choose the unit to convert from and the unit to convert to.
  3. 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 imperial gallon (mpg UK) to miles per US gallon (mpg US):

  • 1 mpg (imp) ≈ 0.832674 mpg (US)
  • 5 mpg (imp) ≈ 4.163371 mpg (US)
  • 10 mpg (imp) ≈ 8.326742 mpg (US)
  • 50 mpg (imp) ≈ 41.633709 mpg (US)
  • 100 mpg (imp) ≈ 83.267418 mpg (US)

Multiply the number of miles per imperial gallon (mpg UK) by about 0.832674 to get miles per US gallon (mpg US). The factor follows from exact definitions. It has more digits than fit here, so it is shown rounded.

Sources: Mile per imperial gallon (mpg UK): exact by definition. Mile per US gallon (mpg US): 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 UK mpg to US mpg?
A: Multiply by about 0.8327, because the imperial gallon is larger than the US gallon. 1 mpg (UK) is about 0.8327 mpg (US).
Q: How many L/100 km is 1 mpg (UK)?
A: About 282.5 L/100 km. Divide 282.481 by your mpg (UK) figure for any other value.
Q: Which is better, a higher or lower number?
A: Miles per gallon and kilometers per liter measure distance per fuel, so a higher number is better. Liters per 100 km measures fuel per distance, so a lower number is better.

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