Mile per US gallon to Liter per 100 km Converter
Type a value — the answer appears instantly. 1 mpg (US) = 235.21 L/100km.
Reviewed by the OmniCalc teamMethod verified 2026-07-01
7.8405 liters per 100 km
= 12.754 km/L= 36.028 mpg (UK)
equals 7.8405 liters per 100 kmFormula: L/100km = 235.21458 ÷ mpg (US)
Mile per US gallon to Liter per 100 km formula
L/100km = 235.21458 ÷ mpg (US)
Convert 5 miles per US gallon to liters per 100 km
- Start with 5 mpg (US).
- Apply the formula L/100km = 235.21458 ÷ mpg (US).
- So 5 mpg (US) = 47.043 L/100km.
Mile per US gallon to Liter per 100 km conversion table
| Miles per US gallon (mpg (US)) | Liters per 100 km (L/100km) |
|---|---|
| 3 mpg (US) | 78.405 L/100km |
| 4 mpg (US) | 58.804 L/100km |
| 5 mpg (US) | 47.043 L/100km |
| 6 mpg (US) | 39.202 L/100km |
| 7 mpg (US) | 33.602 L/100km |
| 8 mpg (US) | 29.402 L/100km |
| 9 mpg (US) | 26.135 L/100km |
| 10 mpg (US) | 23.521 L/100km |
| 12 mpg (US) | 19.601 L/100km |
| 15 mpg (US) | 15.681 L/100km |
| 18 mpg (US) | 13.067 L/100km |
| 20 mpg (US) | 11.761 L/100km |
| 25 mpg (US) | 9.4086 L/100km |
| 30 mpg (US) | 7.8405 L/100km |
| 35 mpg (US) | 6.7204 L/100km |
| 40 mpg (US) | 5.8804 L/100km |
| 45 mpg (US) | 5.227 L/100km |
| 50 mpg (US) | 4.7043 L/100km |
| 60 mpg (US) | 3.9202 L/100km |
| 70 mpg (US) | 3.3602 L/100km |
| 80 mpg (US) | 2.9402 L/100km |
| 90 mpg (US) | 2.6135 L/100km |
| 100 mpg (US) | 2.3521 L/100km |
Unit definitions
What is a mile per US gallon?
Miles per US gallon (mpg) is the fuel-economy measure used in the United States, counting how many miles a vehicle travels on one US gallon (3.785 liters) of fuel. A higher number means better economy. It is the reciprocal of liters-per-100km once gallons and miles are accounted for.
What is a liter per 100 km?
Liters per 100 kilometers (L/100km) is the standard fuel-consumption measure across Europe and most of the world. It states how much fuel a vehicle burns to travel 100 km, so a lower number means a more efficient car — the opposite direction to miles-per-gallon.
Frequently asked questions
What is the formula to convert miles per US gallon to liters per 100 km?
L/100km = 235.21458 ÷ mpg (US). For example, 20 mpg (US) equals 11.761 L/100km.
Why isn't mile per US gallon to liter per 100 km a simple multiplication?
Because one unit measures fuel per distance and the other measures distance per fuel — they are reciprocals. Doubling the mile per US gallon value roughly halves the liter per 100 km value, so the conversion divides rather than multiplies.
Is this mile per US gallon to liter per 100 km converter free?
Yes — the converter is free, works offline once loaded, and computes instantly in your browser without sending your numbers to a server.
Conversion factors follow international definitions (SI / NIST). Last verified 2026-07-01.