Convert Miles per Imperial Gallon to Kilometers per US Gallon

Convert Miles per Imperial Gallon (mpg (Imp)) to Kilometers per US Gallon (km/US gal) instantly and accurately.

Conversion Formula

km/US gal = mpg (Imp) × 0.746235687

About Miles per Imperial Gallon

Miles per Imperial gallon (mpg(Imp)) is the UK and historically Commonwealth standard. The Imperial gallon (4.54609 L) is ~20.1% larger than the US gallon, so mpg(Imp) is always numerically higher: a 7 L/100km car achieves 33.6 mpg(US) but 40.4 mpg(Imp). All UK VCA-certified specs list mpg(Imp). Typical WLTP combined: supermini 45-60 mpg; full hybrid 55-75 mpg; diesel family car 48-68 mpg; large petrol SUV 28-38 mpg. 1 mpg(Imp) = 1.609344/4.54609 km/L = 0.354006 km/L; L/100km = 282.481/mpg(Imp).

About Kilometers per US Gallon

Kilometers per US gallon (km/US gal) appears in regions where metric road distances coexist with US gallon fuel pricing - the US-Mexico border zone, parts of Latin America, and the Caribbean. 1 km/US gal = 1/3.785411784 km/L = 0.264172 km/L. A typical car at 12.75 km/L = 48.3 km/US gal; a scooter at 35 km/L = 132 km/US gal. Mexican Federal District fleet databases and Central American logistics records use this unit when US gallon fuel costs are referenced in kilometre-based route planning. 1 km/US gal = 0.264172 km/L.

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