Unit Conversions & Measures
Kilometers per Liter to Miles per US Gallon Converter
Convert kilometers per liter to miles per US gallon with the exact factor, the working shown step by step and a plain-English explanation.
Your inputs
Change any value to update the result instantly.
Miles per US Gallon
18.817167 mpg (US)
Value in liter per 100 kilometers (internal base unit)
12.5 L/100 km
Reverse conversion check
18.817167 mpg (US) = 8 km/L
Rounded for everyday use
18.82 mpg (US)
The US gallon is smaller than the imperial gallon, so US mpg figures are always lower for the same car.
What this calculator does
Converts a measurement given in kilometre per litres into mile per US gallons using the defined conversion factor.
What your result means
The same quantity expressed in mpg (US) instead of km/L. Nothing about the measurement itself changes.
Formula and working
mpg (US) = convert(km/L) through L/100 km
- 1
Start with your value
8 km/L
- 2
Apply the unit relationship
mpg (US) = convert(km/L) through L/100 km
- 3
Result
8 km/L = 18.817167 mpg (US)
Frequently asked questions
Symbols and assumptions
- km/L
- Input unit — kilometre per litre
- mpg (US)
- Output unit — mile per US gallon
- L/100 km
- Base unit used internally for fuel economy
- • Both units measure fuel economy, so the physical quantity is unchanged by the conversion.
- • The two units are related by a defined equation rather than a single multiplier, so that equation is applied directly.
- • Values are converted through the SI base unit for this quantity rather than pair by pair.
Sources and review
Reviewed 2026-09-22 · Next review 2027-09-22
- • A unit conversion changes how a number is expressed, not how it was measured — the answer can never be more accurate than the value entered.
- • The US gallon is smaller than the imperial gallon, so US mpg figures are always lower for the same car.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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