FORMULA
How to convert
Convert through the category base ratio; mpg US and L/100 km have an inverse relationship.Example: 10 mpg US = 23.52145833 L/100 km.
MPG US → L/100 KM
Miles Per Us Gallon to Liters Per 100 Kilometers
Convert miles per US gallon to liters per 100 kilometers with an exact, deterministic calculation.
LIVE CONVERSIONDECIMAL ENGINE EXACT_
1 mpg US = 235.214583333333 L/100 km
MULTI-CONVERT
QUICK ANSWER
1 Mile per US gallon
235.214583333333 L/100 km
REFERENCE TABLE
Mile per US gallon to Liter per 100 kilometers
| miles per US gallon | liters per 100 kilometers |
|---|---|
| 1 mpg US | 235.21458333 L/100 km |
| 5 mpg US | 47.04291667 L/100 km |
| 10 mpg US | 23.52145833 L/100 km |
| 25 mpg US | 9.40858333 L/100 km |
| 50 mpg US | 4.70429167 L/100 km |
| 100 mpg US | 2.35214583 L/100 km |
ABOUT THIS CONVERSION
Convert miles per US gallon to liters per 100 kilometers
This page converts miles per US gallon (mpg US) to liters per 100 kilometers (L/100 km). Convertor4U first interprets the input using Mile per US gallon's definition, then expresses the same quantity in Liter per 100 kilometers. The result is calculated from the reciprocal fuel-consumption relationship, not from a rounded lookup table.
Real-world example
For comparing vehicle efficiency across regional specifications, an input of 7 mpg US converts to 33.60208333 L/100 km. Keep extra digits while calculating, then round only the final value to the precision the task actually needs.
Rounding and precision
One decimal place is usually adequate for vehicle comparisons. Keep more digits when estimating total trip fuel, then round to a practical volume. Published test-cycle numbers are standardized estimates, not guarantees.
Regional context
US mpg and Imperial mpg use different gallons. The same numeric mpg therefore represents different efficiency. L/100 km is common in Europe and many other regions, while the US commonly uses mpg.
Common mistake
L/100 km runs in the opposite direction to mpg or km/L: a lower L/100 km value means better economy.
Editorial method
Definitions and sources are listed below. Calculations retain more precision than the default display and round only for presentation.
USEFUL ANSWERS
mpg US to L/100 km FAQs
How do I convert miles per US gallon to liters per 100 kilometers?
Enter the mpg US value in the calculator. It applies the reciprocal fuel-consumption relationship and returns the equivalent in L/100 km; the formula and common-value table are shown on this page.
Is the mpg US to L/100 km conversion exact?
Defined measurement relationships are calculated with decimal arithmetic from stored standards. The displayed answer may be rounded for readability. Currency results instead depend on the dated reference rate shown.
How many decimal places should I keep?
One decimal place is usually adequate for vehicle comparisons. Keep more digits when estimating total trip fuel, then round to a practical volume. Published test-cycle numbers are standardized estimates, not guarantees.
What should I check before using the result?
L/100 km runs in the opposite direction to mpg or km/L: a lower L/100 km value means better economy.
FROM UNIT
Mile per US gallon
One mile per us gallon (mpg US) equals .425143707430272 kilometer per liter units (km/L) in the converter's reference scale. It expresses vehicle fuel efficiency using the direction indicated by its label.
NIST Guide to the SI, SP 811 ↗Definition verified 14 August 2026TO UNIT
Liter per 100 kilometers
Liters per 100 kilometers (L/100 km) measures fuel consumed over distance; lower values indicate better economy. It expresses vehicle fuel efficiency using the direction indicated by its label.
NIST Guide to the SI, SP 811 ↗Definition verified 14 August 2026Content reviewed by Convertor4U Editorial Team · 16 August 2026 · Report an error on this page