Fuel Economy Converter
Between MPG (US/UK), L/100 km, and km/L — pick the same car in a different unit system.
Scan to open on your phone
Point your phone camera at the code to open this tool.
Between MPG (US/UK), L/100 km, and km/L — pick the same car in a different unit system.
How to use Fuel Economy Converter
- Open the toolNo signup and nothing to install; it works as soon as the page loads.
- Set “Value”
- Set “From”
- Set “To”
- Read the resultChange any input and the result is recalculated immediately.
Worked example with the defaults
- L100KM · Converted to l100km
- 0.71
Nothing you enter leaves your device
All of the work happens inside your browser. Whatever you type is never packaged up and sent to a server, and no request this page makes carries it.
That makes it safe for contract amounts, personal details and internal documents you would rather not hand to a third party — close the tab and it is gone.
What this tool does not do
Fuel Economy Converter only does what a browser can do on its own — it talks to no backend service. So it keeps no history for you and syncs nothing across devices; if you need a record, copy or download the result.
It is also not a substitute for professional judgement. For legal, medical or tax decisions, treat the output as a starting point rather than a final answer.
Frequently Asked Questions
- Why is the UK gallon different?
- The UK (imperial) gallon is 4.546 L vs the US gallon at 3.785 L. The same car shows a very different MPG number in each system.