Convert miles per gallon to liters per 100km instantly. Enter a value below, or use the formula and reference table further down the page.
In practice
Miles per gallon to litres per 100 km uses 235.215 divided by US mpg, or 282.481 divided by imperial mpg, because the two scales run in opposite directions: higher mpg means lower litres per 100 km. A car with 30 US mpg uses 7.8 L/100km, while 30 imperial mpg is 9.4 L/100km. The gap between US and UK gallons is about 20%, so a UK 40 mpg figure is a US 33 mpg. Check the country when comparing fuel-economy claims between markets.
How to convert miles per gallon to liters per 100km
Multiply the value by 235.2145833.
L/100km = mpg × 235.2145833Example: 10 mpg = 2352.1458 L/100km.
Miles per Gallon to Liters per 100km conversion table
| Miles per Gallon (mpg) | Liters per 100km (L/100km) |
|---|---|
| 1 mpg | 235.2146 L/100km |
| 2 mpg | 470.4292 L/100km |
| 3 mpg | 705.6437 L/100km |
| 4 mpg | 940.8583 L/100km |
| 5 mpg | 1176.0729 L/100km |
| 10 mpg | 2352.1458 L/100km |
| 15 mpg | 3528.2187 L/100km |
| 20 mpg | 4704.2917 L/100km |
| 25 mpg | 5880.3646 L/100km |
| 50 mpg | 11760.7292 L/100km |
| 100 mpg | 23521.4583 L/100km |
Frequently asked questions
How many liters per 100km is 1 mpg?
1 mpg equals 235.2146 liters per 100km.
What is the formula to convert mpg to L/100km?
To convert mpg to L/100km, multiply the value by 235.2145833. The full formula is: L/100km = mpg × 235.2145833.
How do I convert liters per 100km back to miles per gallon?
Use the same calculator above and type your value into the liters per 100km field instead — it converts in both directions. Or use the reverse formula: mpg = L/100km ÷ 235.2145833.
Is the mpg to L/100km conversion exact?
The conversion factor used here (235.2145833) is the standard internationally defined value. Results on this page are rounded to four decimal places for readability.