Km/L to Gal/100 Mi (US) (km/L to gal/100 mi)
1 kilometer per liter equals 42.51437074 gallons (US) per 100 miles.
How to convert kilometers per liter to gallons (US) per 100 miles
Converting kilometers per liter to gallons (US) per 100 miles is not a simple multiplication, so use the formula below.
gallons (US) per 100 miles = 42.51437074 ÷ kilometers per liter
Example: 10 kilometers per liter = 4.251437074 gallons (US) per 100 miles.
Miles per gallon rises as a car gets more efficient, while liters per 100 km falls. The conversion between them is a reciprocal (for US mpg: L/100 km = 235.215 ÷ mpg).
About these units
Kilometer Per Liter (km/L)
Distance traveled on one liter of fuel. The standard way to quote fuel economy in India, Japan, Brazil and much of Asia.
Kilometres per litre is the most literal way to ask how far a car goes on a given amount of fuel. It is a direct measure of fuel economy, so higher is better, and it sits between the two systems that dominate the world: miles per gallon and litres per 100 km. The sources I found do not credit any specific inventor or date for it; it is simply the metric counterpart to miles per gallon, formed by dividing distance by volume in the units a country already used for roads and fuel.
Wikipedia lists India, Japan and South Korea among the places that quote economy in km/L. A conversion shows how it relates to US figures: 1 km/L is about 2.35 mpg (US), so 10 km/L is roughly 23.5 mpg (US), in the same range as the average new US vehicle of the 2020 model year, which was about 25.4 mpg. The Levant has its own variant, kilometres per 20 litres, based on the size of a common fuel container called a tanaka.
The kilometer per liter is the reference unit for fuel economy on this site.
Sources: Wikipedia: Fuel economy in automobiles; Wikipedia: Imperial gallon
Gallon (US) Per 100 Miles (gal/100 mi)
US gallons used per 100 miles. Proposed in the US as a more intuitive way to compare efficiency than miles per gallon.
Gallons per 100 miles flips the familiar miles-per-gallon figure upside down, so that lower numbers mean a more efficient vehicle. New US window stickers have shown it next to mpg since the EPA's 2011 labeling rule, which became mandatory for model year 2013. The label estimates how much fuel or electricity a car needs to cover 100 miles.
The reason is the so-called MPG illusion. Fuel use per mile is the reciprocal of mpg, so equal gains in mpg do not save equal fuel. Lifting a car from 10 to 20 mpg doubles its efficiency, while lifting another from 50 to 60 mpg improves it by only 20 percent, even though each gains 10 mpg.
The unit is the same measure as liters per 100 kilometers used in much of the world. One gallon per 100 miles equals about 2.352 L per 100 km, and the converter stores it as kilometers per liter, so a value x gal/100 mi corresponds to 42.514 divided by x km/L. That is also why a reading of zero has no meaning.
1 gallon (US) per 100 miles = 42.51437074 kilometers per liter (approximately).
Sources: Wikipedia: Fuel economy in automobiles; Wikipedia: Fuel efficiency
Related conversions
- Gal/100 mi (US) to km/L (reverse)
- Km/L to MPG (US)
- Km/L to MPG (UK)
- Km/L to L/100 km
- Km/L to mi/L
- Km/L to gal/100 mi (UK)
- Km/L to L/mil
- MPG (US) to gal/100 mi (US)
- MPG (UK) to gal/100 mi (US)
- L/100 km to gal/100 mi (US)
See all fuel economy units.