Fuel Consumption Converter

Convert fuel consumption between MPG, L/100km, km/L, and other fuel efficiency units.

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    Convert fuel consumption measurements between different units including miles per gallon, liters per 100 kilometers, kilometers per liter, and more with our professional fuel consumption converter.

    What is Fuel Consumption Converter?

    Fuel consumption measures how efficiently a vehicle uses fuel. Different regions use different standards.

    Understanding the Units

    Miles per Gallon (US)

    Distance traveled per US gallon of fuel.

    Common Uses: United States

    Liters per 100 Kilometers

    Fuel used to travel 100 km.

    Common Uses: Europe, Australia, Canada

    Kilometers per Liter

    Distance traveled per liter of fuel.

    Common Uses: Asia, some European countries

    Common Fuel Consumption Conversions

    Example Fuel Consumption
    Efficient hybrid 50 MPG = 4.7 L/100km = 21.3 km/L
    Average petrol car 30 MPG = 7.8 L/100km = 12.8 km/L
    Large SUV 20 MPG = 11.8 L/100km = 8.5 km/L
    Electric car equivalent 100+ MPGe (miles per gallon equivalent)

    Conversion Formulas

    • MPG (US) to L/100km: L/100km = 235.21 ÷ MPG
    • L/100km to MPG (US): MPG = 235.21 ÷ L/100km
    • km/L to L/100km: L/100km = 100 ÷ km/L
    • L/100km to km/L: km/L = 100 ÷ L/100km
    • MPG (US) to km/L: km/L = MPG × 0.4251

    Practical Examples

    Road trip 500 km: at 8 L/100km you need 40 litres of fuel

    Annual fuel cost: 15,000 miles at 30 MPG = 500 gallons used

    Comparing cars: 35 MPG vs 25 MPG saves ~57 gallons per 10,000 miles

    Economy mode driving at 7 L/100km = 33.6 MPG = 14.3 km/L

    When to Use Each Unit

    MPG (miles per gallon): United States and UK fuel economy ratings and comparisons
    L/100km: Europe, Australia, Canada — shows fuel used per 100 km driven
    km/L: Asia (Japan, India) — shows how far you can travel per litre

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