Fuel Consumption Converter
Convert L/100 km, km/L, US and UK miles per gallon and miles per litre — the inverse units handled correctly.
- Your data never leaves your device
- 100% free
- No sign-up
- Works offline after first load
How to use the fuel consumption converter
- Pick the category and the units to convert from and to.
- Type the value — the result and every other unit appear instantly.
- Swap, convert a list, copy or share the result.
About Fuel Consumption Converter
Convert L/100 km, km/L, US and UK miles per gallon and miles per litre — the inverse units handled correctly. The result updates as you type.
Every unit of the category is listed at once, a chart shows common values, and you can swap units, pick the precision or scientific notation, convert a whole list, and share or print the result.
Good for
- Quick everyday conversions
- Engineering, science and homework
- Travel, cooking and shopping
Tip: Use the precision setting to get exactly the number of decimals you need.
Frequently asked questions
Which units are included?
All common metric, imperial and US units for this category — open the From and To lists, or change the category to convert anything else.
Can I see all units at once?
Yes — the result is shown in every unit of the category below the main answer.
Can I convert a list of numbers?
Yes, choose “Convert a list” and paste one value per line.
Why does L/100 km go down when mpg goes up?
L/100 km measures fuel used per distance, while mpg and km/L measure distance per fuel. They are inverses: 5 L/100 km = 20 km/L = 47 US mpg.
What is 30 mpg in L/100 km?
30 US mpg is about 7.84 L/100 km, and 30 UK mpg is about 9.42 L/100 km — the UK gallon is larger.