Convert Miles per Imperial Gallon to Liters per Kilometer

Convert Miles per Imperial Gallon (mpg (Imp)) to Liters per Kilometer (L/km) instantly and accurately.

Miles per Imperial Gallon (mpg (Imp))
Liters per Kilometer (L/km)

Conversion Formula

L/km = 2.824809363 ÷ mpg (Imp)

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 Liters per Kilometer

Liters per kilometer (L/km) is 100× larger than L/100km, suited to heavy vehicles and industrial machinery. A European family car at 0.07 L/km; a Class 8 semi-truck 0.33-0.40 L/km; an M1 Abrams tank ~1.3 L/km on road, ~4 L/km off-road; a diesel mainline locomotive 5-8 L/km. Australian road trains (200+ t) log fuel in L/km to plan outback depot spacing. A Caterpillar 793F mining dump truck fully laden uses 4-6 L/km. 1 L/km = 100 L/100km.

Quick Reference Table

Miles per Imperial Gallon (mpg (Imp))Liters per Kilometer (L/km)
1 mpg (Imp)2.82481 L/km
2 mpg (Imp)1.4124 L/km
5 mpg (Imp)0.564962 L/km
10 mpg (Imp)0.282481 L/km
25 mpg (Imp)0.112992 L/km
50 mpg (Imp)0.0564962 L/km
100 mpg (Imp)0.0282481 L/km

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