A US car achieves 35 mpg. What's that in km/L?

35 ÷ 2.352 ≈ 14.9 km/L. Very decent fuel economy internationally.

Which is easier to compare: mpg or km/L?

Both measure distance per volume (higher = better), so direct comparison works. No inversion like L/100km. 25 mpg ≈ 10.6 km/L—roughly equivalent.

I drove 500 miles on 15 gallons (33 mpg). What's my km/L?

33 mpg ÷ 2.352 ≈ 14 km/L. Excellent fuel economy.

Why don't all countries use the same fuel economy metric?

Historical. The US adopted mpg early. Europe uses L/100km. Both work; conversion helps international comparison. For European-style ratings, see [MPG to L/100km](/fuel/mpg-to-l-per-100km/).

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

Enter a value to instantly convert between fuel economy units.

From

Precision4 dp

1 MPG (US) = 0.4251 Km per Liter

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

km/L = MPG ÷ 2.352

When comparing fuel economy ratings from the US (MPG) to international standards (km/L), remember both are 'distance per volume' metrics where higher is better. No inversion like L/100km. The conversion factor 2.352 accounts for miles/kilometers and gallons/liters.

Source: NIST SP 811, Table B.8

Frequently Asked Questions

Real-World Examples

Average sedan. 25 mpg ≈ 10.6 km/L. Typical efficiency worldwide.

25 mpg = 10.63 km/L

Efficient hybrid. 40 mpg ≈ 17 km/L. Good fuel economy.

40 mpg = 17.02 km/L

Large SUV. 15 mpg ≈ 6.4 km/L. Poor efficiency.

15 mpg = 6.38 km/L

Very efficient hybrid. 50 mpg ≈ 21.3 km/L. Excellent economy.

50 mpg = 21.28 km/L

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

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

Key Formulas

Formula

Frequently Asked Questions

Real-World Examples

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