Convert Kilometers per Imperial Gallon to Imperial Gallons per Mile

Convert Kilometers per Imperial Gallon (km/Imp gal) to Imperial Gallons per Mile (Imp gal/mi) instantly and accurately.

Conversion Formula

Imp gal/mi = 1.609344 ÷ km/Imp gal

About Kilometers per Imperial Gallon

Kilometers per Imperial gallon (km/Imp gal) combines metric distances with the British Imperial gallon (4.54609 L). 1 km/Imp gal = 1/4.54609 km/L = 0.21997 km/L. A typical mid-size car at 12.75 km/L = 57.96 km/Imp gal. It appears in pre-1970s Australian road transport regulations, some South African vehicle import documentation, and pre-1979 Canadian fuel efficiency standards. Relationship to mpg(Imp): km/Imp gal = mpg(Imp) / 1.609344, so 50 mpg(Imp) = 31.07 km/Imp gal. 1 km/Imp gal = 0.21997 km/L.

About Imperial Gallons per Mile

Imperial gallons per mile is the British counterpart, using the 4.54609 L Imperial gallon. 1 Imp gal/mi = 4.54609/1.609344 × 100 = 282.481 L/100km - among the largest fuel-consumption values in practical use, representing large vessels and heavy machinery. It appears in older Royal Navy vessel technical logs and historical British railway and steam-locomotive records. As mpg(Imp) and gal/mi are reciprocals, a 50 mpg(Imp) car uses exactly 0.02 Imp gal/mi = 5.650 L/100km. 1 Imp gal/mi = 282.481 L/100km.

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