A Japanese car gets 18 km/L. What's the MPG equivalent?

18 × 2.352 = 42.3 mpg. It's quite efficient by US standards.

Is km/L the same as liters per 100 km?

No. km/L is distance per volume (higher = better). L/100km is volume per distance (lower = better). They're inverses: L/100km = 100 ÷ km/L. See [L/100km to MPG](/fuel/l-per-100km-to-mpg/) for another common comparison.

My car's dashboard shows 12 km/L. Is that good?

12 km/L ≈ 28 mpg. Average. Modern cars typically achieve 10-20 km/L depending on size and driving.

What's the conversion factor 2.352 based on?

1 mile = 1.609 km, 1 gallon (US) = 3.785 L. So: 1.609 ÷ 3.785 ≈ 0.426, and its reciprocal 2.352.

Kilometers Per Liter (km/L) to Miles Per Gallon (MPG) Converter

Enter a value to instantly convert between fuel economy units.

From

Precision4 dp

1 Km per Liter = 2.3521 MPG (US)

Key Formulas

MPG (US) → Liters per 100km

L/100km = mpg × 235.215

Liters per 100km → MPG (US)

mpg = L/100km × 235.215

Km per Liter → MPG (US)

mpg = km/L × 2.35215

MPG (US) → Km per Liter

km/L = mpg × 0.425144

Formula

mpg = km/L × 2.352

Km/L (kilometers per liter) measures distance traveled per liter of fuel—used in most of the world. MPG (miles per gallon) is the US standard. Both are 'distance per volume' metrics (higher is better). The conversion factor 2.352 accounts for the difference between kilometers/miles and liters/gallons.

Source: NIST SP 811, Table B.8

Frequently Asked Questions

Real-World Examples

Average car. 10 km/L ≈ 23.5 mpg. Typical sedan efficiency worldwide.

10 km/L = 23.52 mpg

Efficient car. 20 km/L ≈ 47 mpg. Excellent fuel economy.

20 km/L = 47.04 mpg

Large SUV or truck. 5 km/L ≈ 11.8 mpg. Poor efficiency.

5 km/L = 11.76 mpg

Decent hybrid. 15 km/L ≈ 35 mpg. Good fuel economy.

15 km/L = 35.28 mpg

mpg to l per 100km l per 100km to mpg mpg to kml

Kilometers Per Liter (km/L) to Miles Per Gallon (MPG) Converter

Key Formulas

Formula

Frequently Asked Questions

Real-World Examples

Related Converters