Liters per 100 kilometers fuel economy unit.
Liters per 100 kilometers to Miles per imperial gallon Converter — L/100 km to mpg imp
Convert Liters per 100 kilometers (L/100 km) to Miles per imperial gallon (mpg imp) using the exact conversion factor (1 liters per 100 kilometers = 282.4809363 miles per imperial gallon). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Liters per 100 kilometers to Miles per imperial gallon 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.
Miles per imperial gallon 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 Miles per imperial gallon
Liters per 100 kilometers and Miles per imperial gallon 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 typically associated with standard fuel-economy unit across most of Europe, Canada, Australia, and elsewhere, while Miles per imperial gallon is typically associated with united Kingdom (historically; UK now also uses L/100km).
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 × 2.824809e-14 = 282.4809363 mpg imp
1 liters per 100 kilometers = 282.4809363 miles per imperial gallon.
Real-world example
30 L/100 km × 2.824809e-14 = 9.416031211 mpg imp
30 liters per 100 kilometers = 9.416031211 miles per imperial gallon.
Conversion table
| Liters per 100 kilometers (L/100 km) | Miles per imperial gallon (mpg imp) |
|---|---|
| 10 L/100 km | 28.24809363 mpg imp |
| 20 L/100 km | 14.12404682 mpg imp |
| 30 L/100 km | 9.416031211 mpg imp |
| 40 L/100 km | 7.062023408 mpg imp |
| 50 L/100 km | 5.649618727 mpg imp |
| 60 L/100 km | 4.708015606 mpg imp |
Reverse conversion: Miles per imperial gallon to Liters per 100 kilometers
282.4809363 mpg imp × 3.540062e+13 = 1 L/100 km
282.4809363 miles per imperial gallon = 1 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 Miles per imperial gallon to Liters per 100 kilometers.
Liters per 100 kilometers vs. Miles per imperial gallon
| Aspect | Liters per 100 kilometers | Miles per imperial gallon |
|---|---|---|
| Family | Metric unit | UK/imperial customary unit |
| Typical use | Official vehicle fuel-consumption labeling across most of the world outside the US | UK vehicle fuel-economy figures (particularly older or enthusiast/import contexts) |
| Where it's used | Standard fuel-economy unit across most of Europe, Canada, Australia, and elsewhere | United Kingdom (historically; UK now also uses L/100km) |
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 Miles per imperial gallon
Miles per imperial gallon (mpg imp) measures fuel economy. Miles per imperial gallon measures distance per imperial gallon (4.54609 L) — about 20% larger than the US gallon, so an imperial MPG figure is correspondingly higher for the same real efficiency. It is classified as a UK/imperial customary unit.
Where it's used: United Kingdom (historically; UK now also uses L/100km)
US mpg vs. imperial mpg. The identical term 'mpg' means a different amount depending on which gallon is used — an imperial mpg figure is about 20% higher than the equivalent US mpg for the same actual fuel efficiency, a common source of confusion when comparing US and UK/Canadian car specs.
Uses of the Miles per imperial gallon today
- UK vehicle fuel-economy figures (particularly older or enthusiast/import contexts)
- Comparing UK-market vehicle specifications to US ones
History of the Miles per imperial gallon
Imperial MPG follows the same automotive tradition as US MPG but uses Britain's imperial gallon (standardized in 1824), leading to the two systems diverging even though they share identical terminology.
Historical origin. Miles per imperial gallon 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.
Miles per imperial gallon — sources
- UK Department for Transport — Vehicle fuel economy — Historical basis for UK mpg reporting.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many miles per imperial gallon are in 1 liters per 100 kilometers?
1 liters per 100 kilometers equals 282.4809363 miles per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert liters per 100 kilometers to miles per imperial gallon?
Fuel economy units sometimes need inversion rather than simple multiplication — the converter above and the formula section handle this automatically.
How do I convert miles per imperial gallon back to liters per 100 kilometers?
Use the reverse factor: 1 miles per imperial gallon equals 282.4809363 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 miles per imperial gallon?
Miles per imperial gallon (mpg imp) measures fuel economy. Miles per imperial gallon measures distance per imperial gallon (4.54609 L) — about 20% larger than the US gallon, so an imperial MPG figure is correspondingly higher for the same real efficiency. It is classified as a UK/imperial customary unit.
Is the liters per 100 kilometers to miles per imperial gallon conversion exact?
Yes. Both liters per 100 kilometers and miles per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 2.824809e-14 used above is exact to as many digits as you choose to display.
What is the difference between us mpg vs. imperial mpg?
The identical term 'mpg' means a different amount depending on which gallon is used — an imperial mpg figure is about 20% higher than the equivalent US mpg for the same actual fuel efficiency, a common source of confusion when comparing US and UK/Canadian car specs.
Where is the liters per 100 kilometers still used today?
Standard fuel-economy unit across most of Europe, Canada, Australia, and elsewhere