Miles per US gallon fuel economy unit.
Miles per US gallon to Liters per 100 kilometers Converter — mpg to L/100 km
Convert Miles per US gallon (mpg) to Liters per 100 kilometers (L/100 km) using the exact conversion factor (1 miles per us gallon = 235.2145833 liters per 100 kilometers). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Miles per US gallon 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 Miles per US gallon to Liters per 100 kilometers
Miles per US gallon 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. Miles per US gallon is typically associated with united States (vehicle fuel-economy ratings and labeling), while Liters per 100 kilometers is typically associated with standard fuel-economy unit across most of Europe, Canada, Australia, and elsewhere.
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 mpg × 4.251437e+13 = 235.2145833 L/100 km
1 miles per us gallon = 235.2145833 liters per 100 kilometers.
Real-world example
30 mpg × 4.251437e+13 = 7.840486111 L/100 km
30 miles per us gallon = 7.840486111 liters per 100 kilometers.
Conversion table
| Miles per US gallon (mpg) | Liters per 100 kilometers (L/100 km) |
|---|---|
| 10 mpg | 23.52145833 L/100 km |
| 20 mpg | 11.76072917 L/100 km |
| 30 mpg | 7.840486111 L/100 km |
| 40 mpg | 5.880364583 L/100 km |
| 50 mpg | 4.704291667 L/100 km |
| 60 mpg | 3.920243056 L/100 km |
Reverse conversion: Liters per 100 kilometers to Miles per US gallon
235.2145833 L/100 km × 2.352146e-14 = 1 mpg
235.2145833 liters per 100 kilometers = 1 miles per us gallon.
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 Miles per US gallon.
Miles per US gallon vs. Liters per 100 kilometers
| Aspect | Miles per US gallon | Liters per 100 kilometers |
|---|---|---|
| Family | US customary unit | Metric unit |
| Typical use | US EPA fuel economy window stickers on new vehicles | Official vehicle fuel-consumption labeling across most of the world outside the US |
| Where it's used | United States (vehicle fuel-economy ratings and labeling) | Standard fuel-economy unit across most of Europe, Canada, Australia, and elsewhere |
Understanding the Miles per US gallon
Miles per US gallon (mpg) measures fuel economy. Miles per US gallon measures distance traveled per US gallon of fuel consumed — higher values mean better efficiency. It is classified as a US customary unit.
Where it's used: United States (vehicle fuel-economy ratings and labeling)
Uses of the Miles per US gallon today
- US EPA fuel economy window stickers on new vehicles
- Everyday US driver fuel-cost estimation
History of the Miles per US gallon
MPG became the standard US fuel-economy metric alongside the rise of mass automobile ownership in the 20th century, with the EPA establishing standardized testing and labeling requirements starting in the 1970s following the 1973 oil crisis.
Historical origin. Miles per US gallon was not the invention of a single named person; it developed through the process described above.
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.
Miles per US gallon — sources
- US EPA — Fuel Economy Testing — Describes the standardized MPG testing and labeling process.
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 miles per us gallon?
1 miles per us gallon equals 235.2145833 liters per 100 kilometers, using the exact defined conversion factor rather than an estimate.
How do I convert miles per us gallon 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 miles per us gallon?
Use the reverse factor: 1 liters per 100 kilometers equals 235.2145833 miles per us gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a miles per us gallon?
Miles per US gallon (mpg) measures fuel economy. Miles per US gallon measures distance traveled per US gallon of fuel consumed — higher values mean better efficiency. It is classified as a US customary unit.
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 miles per us gallon to liters per 100 kilometers conversion exact?
Yes. Both miles per us gallon and liters per 100 kilometers are defined by fixed standards rather than physical artifacts, so the factor of 4.251437e+13 used above is exact to as many digits as you choose to display.
Where is the miles per us gallon still used today?
United States (vehicle fuel-economy ratings and labeling)