Free & Instant
Fuel Converter
Convert fuel volume (Liters, Gallons) or fuel economy (mpg, km/L, L/100km) — instantly and accurately.
Fuel Converter
Choose a mode, enter a value, and select units.
Fuel Volume
Fuel Economy
Converted Value
1 L = 0.2642 galAbout Fuel Conversion
Fuel conversion covers two things: fuel volume (Liters, Gallons — used at the pump), and fuel economy (mpg, km/L, L/100km — used to compare vehicle efficiency across regions). Note that L/100km works in reverse — a lower number means better efficiency.
Common Fuel Conversions
| From | To | Formula |
|---|---|---|
| Gallons (US) | Liters | × 3.78541 |
| MPG (US) | km/L | × 0.425144 |
| MPG (US) | L/100km | 235.215 ÷ mpg |
| Gallons (UK) | Liters | × 4.54609 |
Frequently Asked Questions
Why is a US gallon different from a UK gallon?+
A US gallon is about 3.785 liters while a UK (imperial) gallon is about 4.546 liters — this is why US and UK mpg figures aren't directly comparable.
Why does L/100km go down when efficiency improves?+
L/100km measures how much fuel is used to travel a fixed distance, so a lower number means the car uses less fuel — meaning better efficiency.