km/L to MPG (US) Converter
Enter a value below to convert kilometers per liter to US miles per gallon. Both units rise with efficiency, so you multiply: mpg (US) = km/L × 2.35214583 - for example 10 km/L is 23.52 mpg (US). For the opposite direction, use our mpg (US) to km/L converter.
10 km/L = 23.52 mpg (US). Convert kilometers per liter to US miles per gallon. Need the reverse? See mpg (US) to km/L.
Kilometers per liter
- Definition
- Kilometers per liter (symbol: km/L) is a measure of fuel economy: the distance in kilometers a vehicle travels on one liter of fuel. A higher number means a more efficient car, so it rises with efficiency just like miles per gallon - the opposite sense to L/100km.
- History / origin
- It is built from the kilometer and the liter, both metric units, and follows the same "distance per fuel" logic as the older miles-per-gallon figure. It became a natural fuel-economy measure in metric countries that preferred a distance-based number over L/100km.
- Current use
- Kilometers per liter is the everyday fuel-economy unit in Japan, India and several other Asian and Latin American markets, where it appears on car brochures, advertising and dashboard 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, so it shares the same "more is better" sense as kilometers per liter.
- History / origin
- It is built from the US customary gallon and the statute mile. The US gallon (3.785 liters) is smaller than the UK or Imperial gallon (4.546 liters), 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.
Kilometers per liter to US MPG conversion table
| Kilometers per liter [km/L] | US miles per gallon [mpg (US)] |
|---|---|
| 5 km/L | 11.7607291667 mpg (US) |
| 8 km/L | 18.8171666667 mpg (US) |
| 10 km/L | 23.5214583333 mpg (US) |
| 12 km/L | 28.22575 mpg (US) |
| 15 km/L | 35.2821875 mpg (US) |
| 18 km/L | 42.338625 mpg (US) |
| 20 km/L | 47.0429166667 mpg (US) |
| 22 km/L | 51.7472083333 mpg (US) |
| 25 km/L | 58.8036458333 mpg (US) |
| 30 km/L | 70.564375 mpg (US) |
Popular kilometers per liter to US MPG conversions
Everyday fuel-economy figures, rounded to two decimals - the kind of numbers you meet on real car specifications.
| Kilometers per liter [km/L] | US miles per gallon [mpg (US)] |
|---|---|
| 8 km/L | 18.82 mpg (US) |
| 10 km/L | 23.52 mpg (US) |
| 12 km/L | 28.23 mpg (US) |
| 15 km/L | 35.28 mpg (US) |
| 18 km/L | 42.34 mpg (US) |
| 20 km/L | 47.04 mpg (US) |
| 22 km/L | 51.75 mpg (US) |
| 25 km/L | 58.80 mpg (US) |
| 28 km/L | 65.86 mpg (US) |
| 30 km/L | 70.56 mpg (US) |
How to convert km/L to MPG (US)
To convert km/L to US MPG, multiply the km/L value by 2.35214583. Both units measure distance per unit of fuel - a car that goes more kilometers per liter also goes more miles per gallon - so you multiply rather than divide. For example, 10 km/L = 10 × 2.35214583 = 23.52 mpg (US).
The factor 2.35214583 comes from the mile (1.609344 km) and the US gallon (3.785411784 liters). The reverse factor 0.42514371 converts back the other way:
mpg (US) = km/L × 2.35214583
km/L = mpg (US) × 0.42514371
Example. A car rated at 15 km/L does 15 × 2.35214583 = 35.28 mpg (US), while a thirstier 8 km/L does 8 × 2.35214583 = 18.82 mpg (US).
When you need to convert km/L to MPG (US)
Drivers and buyers move between kilometers per liter and US miles per gallon whenever metric and US figures meet. Common cases:
- Reading a Japanese or Indian car's km/L 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 km/L.
- Translating a manufacturer's km/L claim into MPG to compare two cars fairly.
- Budgeting fuel for a road trip when the brochure quotes kilometers per liter.
Frequently asked questions
How do I convert kilometers per liter to US miles per gallon?
Multiply the km/L value by 2.35214583. For example, 10 km/L equals 10 × 2.35214583 = 23.52 mpg (US). A higher number means a more efficient car in both units.
What is 10 km/L in mpg (US)?
10 km/L is about 23.52 mpg (US), found by multiplying 10 by 2.35214583. The same fuel economy is 28.25 mpg (UK) when measured in Imperial gallons.
What is the km/L to mpg (US) formula?
The formula is mpg (US) = km/L × 2.35214583. Both units rise as a car gets more efficient, so you multiply rather than divide, and the constant 0.42514371 converts back the other way.
Is this the US or UK gallon?
This page uses the US gallon of 3.785 liters, giving mpg (US). The UK or Imperial gallon is larger at 4.546 liters, so for Imperial figures 10 km/L works out to 28.25 mpg (UK).
What is a good km/L figure in mpg (US)?
Around 17 to 20 km/L, roughly 40 to 47 mpg (US), is efficient for a modern petrol car. 10 km/L is about 23.52 mpg (US), while below 8 km/L, under 19 mpg (US), is thirsty.
How do I convert mpg (US) back to km/L?
Multiply the mpg (US) value by 0.42514371, or use our mpg (US) to km/L converter. For example, 30 mpg (US) is 30 × 0.42514371 = 12.75 km/L.
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