Liters per 100 kilometers fuel economy unit.
Liters per 100 kilometers to US gallons per 100 miles Converter — L/100 km to gal/100 mi
Convert Liters per 100 kilometers (L/100 km) to US gallons per 100 miles (gal/100 mi) using the exact conversion factor (1 liters per 100 kilometers = 0.4251437074 us gallons per 100 miles). See the formula, worked examples, conversion table, history, and common uses.
Liters per 100 kilometers to US gallons per 100 miles converter
Converter
Fuel Economy Converter
Convert MPG, km/L, L/100 km, and related transport fuel economy units.
Context values
Some unit families need one extra value for a physically accurate result.
US gallons per 100 miles fuel economy unit.
Normalize fuel economy to distance per volume, inverting consumption units when needed.
Fuel economy supports both distance-per-volume and volume-per-distance units.
Reserved above the conversion cards and below the converter.
About Converting Liters per 100 kilometers to US gallons per 100 miles
Liters per 100 kilometers and US gallons per 100 miles are two of the ways the world measures fuel efficiency, and converting between them is essential for comparing a US car's window-sticker rating to a European or Asian one. Liters per 100 kilometers is most often used for official vehicle fuel-consumption labeling across most of the world outside the us.
Formula
Fuel economy formulas invert between distance-per-volume and volume-per-distance units as needed.
Efficiency-style units (like mpg or km/L) and consumption-style units (like L/100 km) measure the same underlying thing from opposite directions, so converting between the two families requires a reciprocal, not just a multiplication factor.
Simple example
1 L/100 km × 0.4251437074 = 0.4251437074 gal/100 mi
1 liters per 100 kilometers = 0.4251437074 us gallons per 100 miles.
Real-world example
30 L/100 km × 0.4251437074 = 12.75431122 gal/100 mi
30 liters per 100 kilometers = 12.75431122 us gallons per 100 miles.
Conversion table
| Liters per 100 kilometers (L/100 km) | US gallons per 100 miles (gal/100 mi) |
|---|---|
| 10 L/100 km | 4.251437074 gal/100 mi |
| 20 L/100 km | 8.502874149 gal/100 mi |
| 30 L/100 km | 12.75431122 gal/100 mi |
| 40 L/100 km | 17.0057483 gal/100 mi |
| 50 L/100 km | 21.25718537 gal/100 mi |
| 60 L/100 km | 25.50862245 gal/100 mi |
Reverse conversion: US gallons per 100 miles to Liters per 100 kilometers
0.4251437074 gal/100 mi × 2.352145833 = 0.9999999999 L/100 km
0.4251437074 us gallons per 100 miles = 0.9999999999 liters per 100 kilometers.
Fuel economy formulas invert between distance-per-volume and volume-per-distance units as needed.
For a page dedicated to this direction, see US gallons per 100 miles to Liters per 100 kilometers.
Understanding the Liters per 100 kilometers
Liters per 100 kilometers (L/100 km) measures fuel consumption. Liters per 100 kilometers measures fuel consumed to travel 100 km — lower values mean better efficiency, the reverse convention from mpg/km-per-L. It is classified as a Metric unit.
Where it's used: Standard fuel-economy unit across most of Europe, Canada, Australia, and elsewhere
Uses of the Liters per 100 kilometers today
- Official vehicle fuel-consumption labeling across most of the world outside the US
- European and Canadian vehicle efficiency standards and taxation
History of the Liters per 100 kilometers
L/100km inverts the 'efficiency' framing of mpg/km-per-L into a 'consumption' framing (how much fuel is used for a fixed distance), which many transport agencies consider more intuitive for comparing costs and emissions — it became the standard EU fuel-labeling metric as part of vehicle emissions and efficiency regulations from the late 20th century onward.
Historical origin. Liters per 100 kilometers was not the invention of a single named person; it developed through the process described above.
Understanding the US gallons per 100 miles (gal/100 mi)
US gallons per 100 miles fuel economy unit.
Liters per 100 kilometers — sources
- European Commission — Fuel Economy Labelling Directive — Basis for L/100km as the standard EU fuel-consumption metric.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many us gallons per 100 miles are in 1 liters per 100 kilometers?
1 liters per 100 kilometers equals 0.4251437074 us gallons per 100 miles, using the exact defined conversion factor rather than an estimate.
How do I convert liters per 100 kilometers to us gallons per 100 miles?
Fuel economy units sometimes need inversion rather than simple multiplication — the converter above and the formula section handle this automatically.
How do I convert us gallons per 100 miles back to liters per 100 kilometers?
Use the reverse factor: 1 us gallons per 100 miles equals 2.352145833 liters per 100 kilometers. You can also use the swap control in the converter above to flip the direction instantly.
What is a liters per 100 kilometers?
Liters per 100 kilometers (L/100 km) measures fuel consumption. Liters per 100 kilometers measures fuel consumed to travel 100 km — lower values mean better efficiency, the reverse convention from mpg/km-per-L. It is classified as a Metric unit.
What is a us gallons per 100 miles?
US gallons per 100 miles (gal/100 mi) is a unit of fuel economy.
Is the liters per 100 kilometers to us gallons per 100 miles conversion exact?
Yes. Both liters per 100 kilometers and us gallons per 100 miles are defined by fixed standards rather than physical artifacts, so the factor of 0.4251437074 used above is exact to as many digits as you choose to display.
Where is the liters per 100 kilometers still used today?
Standard fuel-economy unit across most of Europe, Canada, Australia, and elsewhere