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Converters

Fuel Economy Converter

Convert fuel economy between mpg, L/100km and km/L.

Free foreverRuns in your browserNo sign-up
235.214583

1 mpg equals 235.214583 L/100km.

1 mpg in every unit

Liters per 100 km (L/100km)235.214583
Kilometers per liter (km/L)0.425144
Miles per gallon (US) (mpg)1
Miles per gallon (UK) (mpg UK)1.20095

About the Fuel Economy Converter

Convert fuel economy between miles per gallon, liters per 100 km and kilometers per liter.

Because L/100km measures fuel used per distance while mpg and km/L measure distance per fuel, this tool applies the correct inverse relationship.

Useful when comparing cars across regions that measure efficiency differently.

Key features

  • US mpg, UK mpg, L/100km and km/L
  • Correct inverse conversion handling
  • Live conversion table for every unit
  • Copy the result instantly

How to use

  1. 1Type the fuel economy value you want to convert.
  2. 2Choose the unit you have and the unit you want.
  3. 3Read the result or copy it in one click.

Examples

US mpg to L/100km
Input: 30 mpg (US)
Output: 7.840486 L/100km

A 30 mpg car uses about 7.84 liters per 100 km.

L/100km to km/L
Input: 5 L/100km
Output: 20 km/L

Using 5 liters per 100 km means driving 20 km on a liter.

Frequently asked questions

Why is L/100km the reverse of mpg?
L/100km measures fuel used to travel a fixed distance, so a lower number is better. mpg and km/L measure distance per unit of fuel, so a higher number is better.
Is US mpg the same as UK mpg?
No. The UK gallon is larger, so the same car shows a higher mpg figure in UK units than in US units.
Does it run offline?
Yes. The conversion runs entirely in your browser.

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