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Miles per UK gallon to Litres per 100 km

Type a value in Miles per UK gallon and get the result in Litres per 100 km, calculated exactly.

L/100 km = 282.480936332 ÷ mpg (UK) Fuel economy converter

30 Miles per UK gallon ≈ 9.416031211 Litres per 100 km

Precision

Exact factorRounded for display to about 10 significant digits.

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Formula

L/100 km = 282.480936332 ÷ mpg (UK)

Miles per UK gallon and Litres per 100 km are inversely related: divide 282.480936332 by the value in Miles per UK gallon to get Litres per 100 km.

Worked examples

  1. 1 mpg (UK) ≈ 282.4809363 L/100 km
  2. 30 mpg (UK) ≈ 9.416031211 L/100 km
  3. 100 mpg (UK) ≈ 2.824809363 L/100 km

This factor is exact by definition.

Conversion table

Miles per UK gallon to Litres per 100 km
Miles per UK gallon (mpg (UK))Litres per 100 km (L/100 km)
10≈ 28.24809
15≈ 18.83206
20≈ 14.12405
25≈ 11.29924
30≈ 9.416031
35≈ 8.070884
40≈ 7.062023
45≈ 6.277354
50≈ 5.649619
60≈ 4.708016
70≈ 4.035442

Values marked ≈ are rounded; the rest are exact.

Reverse table: Litres per 100 km to Miles per UK gallon
Litres per 100 km to Miles per UK gallon
Litres per 100 km (L/100 km)Miles per UK gallon (mpg (UK))
10≈ 28.24809
15≈ 18.83206
20≈ 14.12405
25≈ 11.29924
30≈ 9.416031
35≈ 8.070884
40≈ 7.062023
45≈ 6.277354
50≈ 5.649619
60≈ 4.708016
70≈ 4.035442

Convert Litres per 100 km to Miles per UK gallon

Unit definitions

Miles per UK gallon mpg (UK)
Miles travelled per imperial gallon: about 0.354006 km/L.
Litres per 100 km L/100 km
Litres of fuel used to travel 100 kilometres; lower is more economical.

Questions people ask

Miles per UK gallon to Litres per 100 km: what is the conversion factor?

One mpg (UK) is ≈ 282.4809363 L/100 km.

How do I convert Miles per UK gallon to Litres per 100 km?

Use the formula above. For example, 30 mpg (UK) = ≈ 9.416031211 L/100 km.

Is the conversion exact?

Yes. Both units have exact definitions, so the factor is exact; a result is only rounded when its decimals never end.

Related tools

Litres per 100 km to Miles per UK gallonMiles per US gallon to Litres per 100 kmLitres per 100 km to Miles per US gallonKilometres per litre to Litres per 100 kmLitres per 100 km to Kilometres per litreMiles per US gallon to Miles per UK gallonMiles per UK gallon to Miles per US gallonMiles per UK gallon to Kilometres per litreKilometres per litre to Miles per UK gallonUS gallons per 100 miles to Litres per 100 kmMiles per US gallon to Kilometres per litre Fuel economy converter

Factors checked 19 October 2026.