Translate between MPG (US/UK), L/100km and km/L consumption figures.
Translate between MPG (US/UK), L/100km and km/L consumption figures.
Enter values above and click Calculate — results will appear here with the formula explained.
Fuel economy speaks two dialects. Distance-per-fuel (MPG, km/L) rises when efficiency improves; consumption-per-distance (L/100km) falls instead. Both describe the same tank behavior, and converting requires division rather than simple scaling.
The UK gallon compounds confusion: at 4.546 liters it dwarfs the US gallon's 3.785, so UK MPG figures run about 20% higher for identical vehicles. Always confirm which gallon before comparing spec sheets across the Atlantic.
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Fuel economy speaks two dialects. Distance-per-fuel (MPG, km/L) rises when efficiency improves; consumption-per-distance (L/100km) falls instead. Both describe the same tank behavior, and converting requires division rather than simple scaling. Formula: L/100km = 100 ÷ (km per liter); MPG-US = kml × 3.78541 ÷ 1.609344
Fuel Economy Converter: Translate between MPG (US/UK), L/100km and km/L consumption figures. Formula: L/100km = 100 ÷ (km per liter). Example: A European car rated 6.
Translate between MPG (US/UK), L/100km and km/L consumption figures. Formula: L/100km = 100 ÷ (km per liter); MPG-US = kml × 3.78541 ÷ 1.609344
| Field | What to enter |
|---|---|
| Fuel economy value | e.g. 35 |
| Expressed as… | Enter a value |
All fields use the exact formulas shown below — results include step-by-step breakdowns you can verify by hand.
Fuel economy speaks two dialects. Distance-per-fuel (MPG, km/L) rises when efficiency improves; consumption-per-distance (L/100km) falls instead. Both describe the same tank behavior, and converting requires division rather than simple scaling.
The UK gallon compounds confusion: at 4.546 liters it dwarfs the US gallon's 3.785, so UK MPG figures run about 20% higher for identical vehicles. Always confirm which gallon before comparing spec sheets across the Atlantic.
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A European car rated 6.5 L/100km delivers 36.2 MPG-US and 43.5 MPG-UK — same car, three very different-looking numbers.
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