Fuel Efficiency Converter
Convert MPG to km/L, L/100km & fuel consumption units instantly. Used by car buyers, fleet managers & eco-drivers. Free, no sign-up, displays up to 4 decimals.
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Frequently Asked Questions
Clear answers to common questions to help you use this calculator confidently.
How do I convert MPG to km/L?
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How do I convert MPG to km/L?
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Multiply US MPG by 0.425144. Example: 30 MPG × 0.425144 = 12.75 km/L. To go the other way, divide km/L by 0.425144 to get US MPG.
What is 30 MPG in L/100km?
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What is 30 MPG in L/100km?
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Divide 235.215 by the MPG value: 235.215 ÷ 30 = 7.84 L/100km. This inverse formula works both ways since L/100km and MPG measure fuel use in opposite directions (lower L/100km is better; higher MPG is better).
What is the difference between US MPG and Imperial MPG?
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What is the difference between US MPG and Imperial MPG?
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The US gallon (3.785 L) is smaller than the Imperial gallon (4.546 L), so the same fuel consumption yields a higher US MPG number. 1 US MPG = 1.20095 Imperial MPG.
How do I convert km/L to L/100km?
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How do I convert km/L to L/100km?
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Divide 100 by the km/L value. Example: 12.75 km/L → 100 ÷ 12.75 = 7.84 L/100km.
How accurate is this fuel efficiency converter?
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How accurate is this fuel efficiency converter?
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It uses exact gallon and liter definitions (1 US gallon = 3.785411784 L, 1 Imperial gallon = 4.54609 L), so unit conversions are precise. This tool converts between units only — it does not predict your vehicle's real-world mileage, which varies with driving conditions and vehicle condition.
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