Convert

Litres per 100 kilometres to Miles per imperial gallon

Exact answer: mpg imp = 282.480936 / (l/100 km) (inverse relationship, not a linear factor)

Litres per 100 kilometres and Miles per imperial gallon run in opposite directions. A higher value in one unit means a lower one in the other. Consumption figures appear in vehicle data, test reports and travel cost calculations.

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What do you want to convert?

From1 l/100 km

Result282.480936 mpg imp

FactorInverse formula

Source basisNIST Guide to SI Appendix B

Examples

011 l/100 km = 282.480936 mpg imp

Example value from the reference table. Internal calculation uses stored factors; display output is rounded.

02Common mistake

mpg and l/100 km move in opposite directions. Higher mpg means lower consumption; higher l/100 km means higher consumption.

03Base unit: l/100 km

Fuel units are normalised through litres per 100 kilometres; mpg and km/l are inverse values.

Table

Litres per 100 kilometres to Miles per imperial gallon
Litres per 100 kilometres	Miles per imperial gallon
1	282.480936
2	141.240468
5	56.496187
10	28.248094
20	14.124047
50	5.649619

Formula

Fuel units are normalised through litres per 100 kilometres; mpg and km/l are inverse values.

Sources

NIST Guide to SI Appendix BNIST conversion-factor method and non-SI factors.

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Factor origin

Factors come from the stored source family and are not derived from rounded display values.

Rounding rule

UnitCloud keeps calculating with stored factors and rounds only the displayed output by selected precision.

When not to use

Do not use as the sole basis for official, medical, safety-critical or contractual decisions.

Citation

Citation note: UnitCloud, conversion with formula, sources reviewed: September 2026. Fuel economy. Source basis: NIST Guide to SI Appendix B.

Common questions

Which formula applies to Litres per 100 kilometres to Miles per imperial gallon?

mpg imp = 282.480936 / (l/100 km)

Which formula does Litres per 100 kilometres to Miles per imperial gallon use?

Fuel units are normalised through litres per 100 kilometres; mpg and km/l are inverse values.

What is the most common mistake?

mpg and l/100 km move in opposite directions. Higher mpg means lower consumption; higher l/100 km means higher consumption.

When should I verify the result?

Do not use as the sole basis for official, medical, safety-critical or contractual decisions.