Fuel Efficiency Converter
MPG · km/L · L/100km

Convert between US MPG, UK MPG, kilometers per liter, and liters per 100km. Know your car's fuel economy at a glance.

mpg to km per litre fuel efficiency converter l/100km to mpg km/l calculator

Converter

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Fuel Consumption Converter

Enter value → choose unit → see all equivalents

Value to convert

📈 Fuel efficiency rating (higher = better)

Enter a value to see fuel economy

Reference Table

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Common Fuel Economy Values

Compare different vehicle types

Vehicle Type	MPG (US)	km/L	L/100km

Formulas & Tips

Conversion Formulas

🔹 1 km/L = 2.35214583 MPG (US) = 2.82480936 MPG (UK)
🔹 L/100km = 100 / (km/L)
🔹 MPG (US) → km/L = MPG / 2.35214583
🔹 L/100km → km/L = 100 / (L/100km)

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US vs UK Gallon

US gallon = 3.785 L, UK gallon = 4.546 L. Same MPG number differs! Our converter handles both.

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L/100km Logic

Lower L/100km = better efficiency. 6 L/100km is excellent, 12 L/100km is high consumption.

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Hybrids

Hybrid cars often achieve 4-5 L/100km (≈ 50-60 MPG US).

FAQs

How do I convert MPG to km/L?+

Divide MPG (US) by 2.352 to get km/L. Example: 30 MPG ÷ 2.352 = 12.75 km/L. Our converter does this instantly for both US and UK MPG.

What is a good fuel economy in L/100km?+

For a gasoline car: < 6 L/100km is excellent, 6-8 good, 8-10 average, > 10 poor. Hybrids can achieve 3-5 L/100km.

Why are US and UK MPG different?+

Because the gallon size differs: 1 US gal = 3.785 liters, 1 UK gal = 4.546 liters. The same car will have a higher MPG (UK) number.

How to convert L/100km to MPG?+

MPG (US) = 235.214583 / (L/100km). MPG (UK) = 282.480936 / (L/100km). Use our converter for precise results.