Liters per kilometer fuel economy unit.
Liters per kilometer to US gallons per 100 miles Converter — L/km to gal/100 mi
Convert Liters per kilometer (L/km) to US gallons per 100 miles (gal/100 mi) using the exact conversion factor (1 liters per kilometer = 42.51437074 us gallons per 100 miles). See the formula, worked examples, and conversion table.
Liters per kilometer to US gallons per 100 miles converter
Converter
Fuel Economy Converter
Convert MPG, km/L, L/100 km, and related transport fuel economy units.
Context values
Some unit families need one extra value for a physically accurate result.
US gallons per 100 miles fuel economy unit.
Normalize fuel economy to distance per volume, inverting consumption units when needed.
Fuel economy supports both distance-per-volume and volume-per-distance units.
Reserved above the conversion cards and below the converter.
About Converting Liters per kilometer to US gallons per 100 miles
Liters per kilometer and US gallons per 100 miles are two of the ways the world measures fuel efficiency, and converting between them is essential for comparing a US car's window-sticker rating to a European or Asian one. Specifically: Liters per kilometer fuel economy unit, and uS gallons per 100 miles fuel economy unit.
Formula
Fuel economy formulas invert between distance-per-volume and volume-per-distance units as needed.
Efficiency-style units (like mpg or km/L) and consumption-style units (like L/100 km) measure the same underlying thing from opposite directions, so converting between the two families requires a reciprocal, not just a multiplication factor.
Simple example
1 L/km × 42.51437074 = 42.51437074 gal/100 mi
1 liters per kilometer = 42.51437074 us gallons per 100 miles.
Real-world example
30 L/km × 42.51437074 = 1,275.431122 gal/100 mi
30 liters per kilometer = 1,275.431122 us gallons per 100 miles.
Conversion table
| Liters per kilometer (L/km) | US gallons per 100 miles (gal/100 mi) |
|---|---|
| 10 L/km | 425.1437074 gal/100 mi |
| 20 L/km | 850.2874149 gal/100 mi |
| 30 L/km | 1,275.431122 gal/100 mi |
| 40 L/km | 1,700.57483 gal/100 mi |
| 50 L/km | 2,125.718537 gal/100 mi |
| 60 L/km | 2,550.862245 gal/100 mi |
Reverse conversion: US gallons per 100 miles to Liters per kilometer
42.51437074 gal/100 mi × 0.02352145833 = 0.9999999999 L/km
42.51437074 us gallons per 100 miles = 0.9999999999 liters per kilometer.
Fuel economy formulas invert between distance-per-volume and volume-per-distance units as needed.
For a page dedicated to this direction, see US gallons per 100 miles to Liters per kilometer.
Understanding the Liters per kilometer (L/km)
Liters per kilometer fuel economy unit.
Understanding the US gallons per 100 miles (gal/100 mi)
US gallons per 100 miles fuel economy unit.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many us gallons per 100 miles are in 1 liters per kilometer?
1 liters per kilometer equals 42.51437074 us gallons per 100 miles, using the exact defined conversion factor rather than an estimate.
How do I convert liters per kilometer to us gallons per 100 miles?
Fuel economy units sometimes need inversion rather than simple multiplication — the converter above and the formula section handle this automatically.
How do I convert us gallons per 100 miles back to liters per kilometer?
Use the reverse factor: 1 us gallons per 100 miles equals 0.0235214583 liters per kilometer. You can also use the swap control in the converter above to flip the direction instantly.
What is a liters per kilometer?
Liters per kilometer (L/km) is a unit of fuel economy.
What is a us gallons per 100 miles?
US gallons per 100 miles (gal/100 mi) is a unit of fuel economy.
Is the liters per kilometer to us gallons per 100 miles conversion exact?
Yes. Both liters per kilometer and us gallons per 100 miles are defined by fixed standards rather than physical artifacts, so the factor of 42.51437074 used above is exact to as many digits as you choose to display.