Convert km/l, l/100km, and mpg. Calculate and compare your vehicle's efficiency.
Fuel efficiency measures how much distance a vehicle travels per unit of fuel consumed, but there's an interesting mathematical quirk here: the two main systems used worldwide, kilometres per litre (km/l) and litres per 100 kilometres (l/100km), aren't simply linear conversions of each other - they're inverse relationships, meaning "doubling efficiency" in km/l doesn't correspond to "halving" in l/100km the way many people intuitively expect. This system difference also reflects a real cultural difference: countries using km/l tend to emphasize "how much mileage you get," while countries using l/100km (mostly European) emphasize "how much you'll spend" for a standard distance - a small framing difference that reveals how each culture thinks about fuel consumption. The United States uses miles per gallon (mpg), adding yet another conversion layer for anyone comparing vehicles across markets. This converter correctly calculates between km/l, l/100km, US mpg, and UK imperial mpg (which uses a different-sized gallon than the American one), essential for anyone deciding whether to buy an imported car and needing to understand real consumption, logistics and fleet professionals optimizing operational costs, and any driver comparing vehicle efficiency advertised in different measurement systems.
Divide 100 by the value. Example: 12 km/l = 100 ÷ 12 = 8.33 l/100km.
Multiply by 0.4251. Example: 30 mpg = 12.75 km/l.
Both indicate efficiency. High km/l = more km with less fuel; low l/100km = less fuel per 100 km.
Modern compact cars typically do 10 to 15 km/l in the combined cycle (urban + highway).
Yes, completely free, with no registration and no limit.