Liters per 100 Kilometers (L/100 km) to Gallons US per 100 Miles (gal US/100 mi)

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Liters per 100 Kilometers (L/100 km) to Gallons US per 100 Miles (gal US/100 mi) conversion table

Here are the most common conversions for Liters per 100 Kilometers (L/100 km) to Gallons US per 100 Miles (gal US/100 mi) at a glance.

Liters per 100 Kilometers (L/100 km)	Gallons US per 100 Miles (gal US/100 mi)
0.1	0.04251437
0.5	0.21257185
1	0.42514371
2	0.85028741
3	1.27543112
5	2.12571854
10	4.25143707
20	8.50287415
30	12.75431122
50	21.25718537
100	42.51437074

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Converting Liters per 100 Kilometers (L/100 km) to Gallons US per 100 Miles (gal US/100 mi)

Fuel economy is the odd one out among conversions: it is usually a rate, and converting Liters per 100 Kilometers (L/100 km) to Gallons US per 100 Miles (gal US/100 mi) means flipping between "fuel per distance" (liters per 100 km) and "distance per fuel" (miles per gallon) — which are mathematical inverses, not simple multiples. Better economy means a smaller L/100km number but a larger mpg number.

The Two MPG Problem

US gallons (3.785 L) and imperial gallons (4.546 L) differ by 20%, so "30 mpg" means two different things depending on which side of the Atlantic you are on — always check. The conversion everyone should know: 235.21 ÷ mpg (US) = L/100km, which lets you compare any car review worldwide.

Practical Tips

Comparing cars? Convert everything to L/100km — it is linear, so halving it truly halves your fuel bill, while mpg improvements have diminishing returns (going 10→20 mpg saves far more fuel than 30→40). For EVs, the emerging standard is kWh/100km or miles/kWh — same inverse logic.