L/100km to MPG (US) Converter
Enter a value below to convert liters per 100 km to US miles per gallon. Fuel economy is reciprocal, so you divide: mpg (US) = 235.2146 / L/100km - for example 8 L/100km is 29.40 mpg (US). For the opposite direction, use our mpg (US) to L/100km converter.
8 L/100km = 29.40 mpg (US). Convert liters per 100 km to US miles per gallon. Need the reverse? See mpg (US) to L/100km.
Liters per 100 kilometers
- Definition
- Liters per 100 km (symbol: L/100km) is a measure of fuel consumption: the volume of fuel, in liters, a vehicle burns to travel 100 kilometers. Because the distance is fixed and the fuel varies, a lower number means a more efficient car - the opposite sense to MPG.
- History / origin
- It is the metric standard for fuel economy, defined from the liter and the kilometer. As Europe and most of the world moved to SI units, L/100km replaced miles-per-gallon style figures on car specifications and dashboards.
- Current use
- L/100km is the official fuel-economy unit across Europe, Australia, New Zealand, South Africa and much of Asia, quoted on manufacturer brochures, window stickers and trip computers.
US miles per gallon
- Definition
- US miles per gallon (symbol: mpg (US)) is a measure of fuel economy: the distance in miles a vehicle travels on one US gallon of fuel (3.785 liters). A higher number means a more efficient car, making it the reciprocal of L/100km.
- History / origin
- It is built from the US customary gallon and the statute mile. The US gallon is smaller than the Imperial gallon, so US MPG figures are always lower than the UK MPG figure for the same car.
- Current use
- US MPG is the standard fuel-economy unit in the United States, where EPA city and highway ratings appear on every new-car window sticker and in fuel-cost comparisons.
Liters per 100 km to US MPG conversion table
| Liters per 100 km [L/100km] | US miles per gallon [mpg (US)] |
|---|---|
| 3 L/100km | 78.4048611111 mpg (US) |
| 4 L/100km | 58.8036458333 mpg (US) |
| 5 L/100km | 47.0429166667 mpg (US) |
| 6 L/100km | 39.2024305556 mpg (US) |
| 7 L/100km | 33.6020833333 mpg (US) |
| 8 L/100km | 29.4018229167 mpg (US) |
| 9 L/100km | 26.1349537037 mpg (US) |
| 10 L/100km | 23.5214583333 mpg (US) |
| 12 L/100km | 19.6012152778 mpg (US) |
| 15 L/100km | 15.6809722222 mpg (US) |
| 20 L/100km | 11.7607291667 mpg (US) |
| 25 L/100km | 9.4085833333 mpg (US) |
Popular liters per 100 km to US MPG conversions
Everyday fuel-economy figures, rounded to two decimals - the kind of numbers you meet on real car specifications.
| Liters per 100 km [L/100km] | US miles per gallon [mpg (US)] |
|---|---|
| 4 L/100km | 58.80 mpg (US) |
| 5 L/100km | 47.04 mpg (US) |
| 6 L/100km | 39.20 mpg (US) |
| 7 L/100km | 33.60 mpg (US) |
| 8 L/100km | 29.40 mpg (US) |
| 9 L/100km | 26.13 mpg (US) |
| 10 L/100km | 23.52 mpg (US) |
| 12 L/100km | 19.60 mpg (US) |
| 15 L/100km | 15.68 mpg (US) |
| 18 L/100km | 13.07 mpg (US) |
| 20 L/100km | 11.76 mpg (US) |
| 25 L/100km | 9.41 mpg (US) |
How to convert L/100km to MPG (US)
To convert L/100km to US MPG, divide 235.2146 by the L/100km value. Fuel economy is a reciprocal measure - a car that burns fewer liters per 100 km travels more miles per gallon - so you divide instead of multiplying. For example, 8 L/100km = 235.2146 / 8 = 29.40 mpg (US).
The constant 235.2146 comes from the US gallon (3.785411784 liters) and the mile (1.609344 km). The same constant works in both directions:
mpg (US) = 235.2145833 / L/100km
L/100km = 235.2145833 / mpg (US)
Example. A car rated at 5 L/100km does 235.2146 / 5 = 47.04 mpg (US), while a thirstier 12 L/100km does 235.2146 / 12 = 19.60 mpg (US).
When you need to convert L/100km to MPG (US)
Drivers and buyers move between liters per 100 km and US miles per gallon whenever metric and US figures meet. Common cases:
- Reading a European or Japanese car's L/100km fuel-economy rating as a familiar US MPG number.
- Comparing an imported model's spec sheet against US-market EPA MPG ratings.
- Working out the real MPG of a rental car abroad whose trip computer shows L/100km.
- Translating a manufacturer's L/100km claim into MPG to compare two cars fairly.
- Budgeting fuel for a road trip when the brochure quotes liters per 100 km.
Frequently asked questions
How do I convert L/100km to MPG?
Divide 235.2146 by the L/100km figure. For example, 8 L/100km equals 235.2146 / 8 = 29.40 mpg (US). The relationship is reciprocal, so a lower L/100km means a higher MPG.
What is 8 L/100km in mpg?
8 L/100km is about 29.40 mpg (US), found by dividing 235.2146 by 8. Measured in Imperial gallons the same car is 35.31 mpg (UK).
What is the L/100km to mpg formula?
The formula is mpg (US) = 235.2146 / L/100km. Because the two units are reciprocal measures of the same fuel use, you divide rather than multiply, and the same constant converts back the other way.
Is this US or UK MPG?
This page uses US MPG, based on the US gallon of 3.785 liters. For Imperial figures use our L/100km to MPG (UK) converter, where 8 L/100km works out to 35.31 mpg (UK).
What is a good L/100km figure in MPG?
Around 5 to 6 L/100km, or about 39 to 47 mpg (US), is efficient for a modern petrol car. 8 L/100km is roughly 29 mpg (US), while over 12 L/100km, under 20 mpg (US), is thirsty.
How do I convert mpg back to L/100km?
Divide 235.2146 by the MPG value, or use our mpg (US) to L/100km converter. For example, 30 mpg (US) is 235.2146 / 30 = 7.84 L/100km.
Popular fuel consumption conversions
Jump to another fuel economy conversion - each link opens a converter preset to that pair.
Convert liters per 100 km to other fuel units
Convert a liters per 100 km measurement into any other fuel consumption unit our converter supports.