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Fuel Economy
Miles per gallon (UK) to Kilometers per liter
Convert miles per gallon (UK) (mpg (UK)) to kilometers per liter (km/L). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 mpg (UK) = 0.354006 km/L
Miles per gallon (UK) to Kilometers per liter Conversion Table
Common values, ready to copy:
| miles per gallon (UK) | kilometers per liter |
|---|---|
| 1 mpg (UK) | 0.354006 km/L |
| 2 mpg (UK) | 0.708012 km/L |
| 5 mpg (UK) | 1.77 km/L |
| 10 mpg (UK) | 3.5401 km/L |
| 25 mpg (UK) | 8.8501 km/L |
| 50 mpg (UK) | 17.7003 km/L |
| 100 mpg (UK) | 35.4006 km/L |
| 1,000 mpg (UK) | 354.01 km/L |
Formula
km/L = mpg(UK) × 0.3540
Fuel economy can be expressed as distance per unit fuel (mpg, km/L, higher is better) or fuel per unit distance (L/100km, lower is better). They convert via inverse: mpg(US) × L/100km = 235.2146.
About Miles per gallon (UK) and Kilometers per liter
Miles per gallon (UK) (mpg (UK)): Distance per UK imperial gallon (4.546 L, about 20% larger than the US gallon); the UK historically uses the imperial gallon, so UK mpg numbers look higher than US numbers for the same car. Common uses: UK vehicle specifications, UK car reviews, and historical British data.
Kilometers per liter (km/L): Inverse of L/100km — distance traveled per fuel volume; less common than L/100km but used in some Asian markets. Common uses: Vehicle fuel economy in Japan, India, and several other Asian markets; conceptually similar to mpg but in metric units.
How the conversion works
Fuel economy can be expressed as distance per unit fuel (mpg, km/L, higher is better) or fuel per unit distance (L/100km, lower is better). They convert via inverse: mpg(US) × L/100km = 235.2146.
The exact relationship is km/L = mpg(UK) × 0.3540, which the calculator at the top of this page applies in both directions. Type into either field and the other updates immediately.
When this conversion matters
Converting between miles per gallon (UK) and kilometers per liter comes up wherever fuel economy measurements move between systems — from one country's conventions to another's, from a scientific reference to a practical specification, or from one industry's working unit to another's. The calculator and reference table above cover the everyday range; for unusual values you can type any number into either field.