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HomeFuel consumption & efficiencykm/L to L/100 km
Dedicated unit pair

Kilometres per litre to Litres per 100 kilometres

Convert km/L to L/100 km instantly, then review the formula, assumptions, and rounding guidance.

Fuel consumption & efficiencyInstant result
Decimals
Formula Convert km/L to litres per 100 kilometres, then convert to L/100 km. 1 km/L = 100 L/100 km
Common examples
One value, several units
Litres per 100 kilometres100 L/100 km
Miles per US gallon2.3521 mpg (US)
Miles per imperial gallon2.8248 mpg (imp)

Conversion table

km/LL/100 km
1 km/L100 L/100 km
2 km/L50 L/100 km
5 km/L20 L/100 km
10 km/L10 L/100 km
25 km/L4 L/100 km
50 km/L2 L/100 km
100 km/L1 L/100 km

Conversion chart

1 km/L100 L/100 km
5 km/L20 L/100 km
10 km/L10 L/100 km
25 km/L4 L/100 km
50 km/L2 L/100 km
Worked example

8 L/100 km is approximately 29.4 US mpg.

Unit definition

Kilometres per litre (km/L) This unit is defined through the displayed non-linear relationship to litres per 100 kilometres.

Unit history

Kilometres per litre is represented here using its modern SI definition or an internationally accepted relationship to an SI base unit.

Step by step

1. Parse the value, including fractions.
2. Convert km/L to litres per 100 kilometres.
3. Convert the base value to L/100 km and apply your display precision.

Important

Fuel economy and fuel consumption are reciprocal measures; zero is not a valid input.

What this calculation means

Understand the result before using it

Kilometres per litre to Litres per 100 kilometres converts a value measured in Kilometres per litre (km/L) into the equivalent value in Litres per 100 kilometres (L/100 km). The numerical value changes because the size and definition of the selected unit changes; the underlying quantity does not.

Calculated result

The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.

Method

Formula, assumptions, and example

Formula

Convert km/L to litres per 100 kilometres, then convert the base value to L/100 km.

Assumptions

  • Kilometres per litre and Litres per 100 kilometres represent the same fuel consumption & efficiency quantity.
  • The input is expressed in km/L; the output is expressed in L/100 km.
  • Fuel economy and fuel consumption are reciprocal measures; zero is not a valid input.
Worked example

1 km/L = 100 L/100 km. For another value, apply the same relationship and round only to the precision your source measurement supports.

When to use it

Good uses

  • Read a km/L measurement in a document that expects L/100 km.
  • Compare a kilometres per litre value with a value reported in litres per 100 kilometres.
  • Check the km/L-to-L/100 km arithmetic before copying the result into another calculation.
Limitations

Common mistakes to avoid

  • Fuel consumption and fuel economy are reciprocal; zero and negative values are not physically valid inputs.
  • Round the output to a precision justified by the original measurement.
  • Verify safety-critical, regulated, laboratory, and contractual conversions against the controlling standard.
References

Sources and further reading

These references explain the underlying standards or provide authoritative context. Your own contract, institution, clinician, product documentation, local code, or governing standard may be the controlling source.

SI BrochureInternational Bureau of Weights and Measures (BIPM)

Authoritative definitions of the International System of Units and SI prefixes.

FAQ

Questions about this calculation

How do I convert Kilometres per litre to Litres per 100 kilometres?

Convert km/L to litres per 100 kilometres, then convert the base value to L/100 km. Using the displayed relationship, 1 km/L equals 100 L/100 km.

How many Litres per 100 kilometres are in one Kilometres per litre?

One Kilometres per litre is 100 Litres per 100 kilometres. The displayed digits may be rounded.

Can I reverse the km/L to L/100 km conversion?

Yes. Swap the source and target units in the converter. The reverse relationship converts L/100 km back to km/L.

Is the Kilometres per litre to Litres per 100 kilometres result exact?

The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.