How do I convert MPG to L/100km?

To convert miles per gallon to liters per 100 kilometers, divide 282.5 by the MPG value for US gallons. For UK gallons, divide 282.5 by the MPG value. For example, 25 MPG (US) = 11.3 L/100km.

What's the difference between US and UK gallons?

A US gallon is 3.785 liters, while a UK (imperial) gallon is 4.546 liters. This affects fuel consumption calculations. The converter supports both standards.

How many kilometers per liter is 30 MPG?

30 MPG (US) equals approximately 12.75 kilometers per liter. 30 MPG (UK) equals approximately 10.6 kilometers per liter.

What is good fuel consumption?

For cars, good fuel consumption is typically: 40-50 MPG (5-6 L/100km) for compact cars, 30-40 MPG (6-8 L/100km) for sedans, and 20-30 MPG (8-12 L/100km) for SUVs and trucks.

Fuel Consumption Converter

Convert between MPG, L/100km, km/L, and more for vehicle fuel economy

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Conversion Formula L/100km = 282.5 / MPG (US)

Inverse MPG (US) = 282.5 / L/100km

Result 9.41 L/100km

Fuel Economy Details

25 MPG (US) =

9.41

Liters per 100km

L/100km = 282.5 / 25 = 11.3

Also equals

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Conversion History

Date Saved	From Value	From Unit	To Value	To Unit	Formula	Action

Compact Cars

40-50 MPG
5-6 L/100km
17-21 km/L

Sedans

30-40 MPG
6-8 L/100km
12-17 km/L

SUVs & Trucks

20-30 MPG
8-12 L/100km
8-12 km/L

Fuel Consumption Disclaimer

The Fuel Consumption Converter uses standard conversion formulas. Results are rounded to the selected precision. Actual vehicle fuel economy varies based on driving conditions, vehicle maintenance, and driving habits.

Last Updated: March 2026 6 fuel economy units supported