US gallons per 100 miles fuel economy unit.
US gallons per 100 miles to Liters per 100 kilometers Converter — gal/100 mi to L/100 km
Convert US gallons per 100 miles (gal/100 mi) to Liters per 100 kilometers (L/100 km) using the exact conversion factor (1 us gallons per 100 miles = 2.352145833 liters per 100 kilometers). See the formula, worked examples, conversion table, history, and common uses.
US gallons per 100 miles to Liters per 100 kilometers 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.
Liters per 100 kilometers 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 US gallons per 100 miles to Liters per 100 kilometers
US gallons per 100 miles and Liters per 100 kilometers 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. Specifically: US gallons per 100 miles fuel economy unit, and liters per 100 kilometers fuel economy unit.
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 gal/100 mi × 2.352145833 = 2.352145833 L/100 km
1 us gallons per 100 miles = 2.352145833 liters per 100 kilometers.
Real-world example
30 gal/100 mi × 2.352145833 = 70.564375 L/100 km
30 us gallons per 100 miles = 70.564375 liters per 100 kilometers.
Conversion table
| US gallons per 100 miles (gal/100 mi) | Liters per 100 kilometers (L/100 km) |
|---|---|
| 10 gal/100 mi | 23.52145833 L/100 km |
| 20 gal/100 mi | 47.04291667 L/100 km |
| 30 gal/100 mi | 70.564375 L/100 km |
| 40 gal/100 mi | 94.08583333 L/100 km |
| 50 gal/100 mi | 117.6072917 L/100 km |
| 60 gal/100 mi | 141.12875 L/100 km |
Reverse conversion: Liters per 100 kilometers to US gallons per 100 miles
2.352145833 L/100 km × 0.4251437074 = 0.9999999999 gal/100 mi
2.352145833 liters per 100 kilometers = 0.9999999999 us gallons per 100 miles.
Fuel economy formulas invert between distance-per-volume and volume-per-distance units as needed.
For a page dedicated to this direction, see Liters per 100 kilometers to US gallons per 100 miles.
Understanding the US gallons per 100 miles (gal/100 mi)
US gallons per 100 miles fuel economy unit.
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.
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 liters per 100 kilometers are in 1 us gallons per 100 miles?
1 us gallons per 100 miles equals 2.352145833 liters per 100 kilometers, using the exact defined conversion factor rather than an estimate.
How do I convert us gallons per 100 miles to liters per 100 kilometers?
Fuel economy units sometimes need inversion rather than simple multiplication — the converter above and the formula section handle this automatically.
How do I convert liters per 100 kilometers back to us gallons per 100 miles?
Use the reverse factor: 1 liters per 100 kilometers equals 0.4251437074 us gallons per 100 miles. You can also use the swap control in the converter above to flip the direction instantly.
What is a us gallons per 100 miles?
US gallons per 100 miles (gal/100 mi) is a unit of fuel economy.
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.
Is the us gallons per 100 miles to liters per 100 kilometers conversion exact?
Yes. Both us gallons per 100 miles and liters per 100 kilometers are defined by fixed standards rather than physical artifacts, so the factor of 2.352145833 used above is exact to as many digits as you choose to display.