L/100km to MPG Converter
Convert l/100km to mpg — and back — in an instant. Type a value in either box and the answer updates live. It’s accurate, free and completely private: the conversion runs entirely on your device.
- 🔒 100% private — no uploads
- 🆓 Free, no watermark
- 📱 Works on any device
How to convert
- 1
Choose your units
The tool opens on the most common pairing. Change either unit from its dropdown, or hit the swap button to flip the direction.
- 2
Type a value
Enter a number in either box. The other side updates instantly as you type — convert either way without pressing a button.
- 3
Copy or compare
Copy the result to your clipboard, or scan the common-values table below for quick at-a-glance conversions.
Why use L/100km to MPG Converter?
100% private
Every conversion is computed locally in your browser. Nothing you enter ever leaves your device.
Instant & two-way
Results update live as you type, in either direction — no “convert” button and no page reloads.
Accurate
Conversions use exact, standards-based factors, so you get the same answer a trusted reference would.
Works on any device
No install and no account — it runs in any modern browser on desktop, tablet or phone.
L/100km to MPG formula
Divide 235.215 by the L/100km figure to get US mpg: mpg = 235.215 ÷ (L/100km). A car using 5 L/100km does 47 mpg; 10 L/100km is 23.5 mpg. The relationship is inverse — halving consumption doubles the mpg.
Comparing cars across markets
European spec sheets quote L/100km, American ones mpg — this converter puts them on one scale. Beware the imperial gallon when reading UK figures: multiply UK mpg by 0.833 to get US mpg before comparing with an American brochure.
Frequently asked questions
How do I convert l/100km to mpg?
Type the number of l/100km in the first box and read the result in mpg — it updates as you type. To go the other way, type in the mpg box instead.
Does anything get uploaded to a server?
No. The conversion runs entirely in your browser with JavaScript — nothing you type is uploaded, stored or logged, and it keeps working offline once the page has loaded.
Is it free?
Yes — completely free, no account, no watermark and no limits.