Convert mpg (US) to L/100km instantly — with a table, typical fuel-economy values, and a live calculator.
1 mpg (US) equals 235.21 L/100km.
Consumption (L/100km) and efficiency (mpg, km/L) are reciprocals of each other: a higher mpg means a lower L/100km. Double the mpg and you halve the L/100km — so the conversion follows a hyperbola, not a straight line. Concretely: L/100km = 235.21 ÷ mpg (US).
| mpg (US) | L/100km |
|---|---|
| 10 mpg (US) | 23.52 L/100km |
| 15 mpg (US) | 15.68 L/100km |
| 20 mpg (US) | 11.76 L/100km |
| 25 mpg (US) | 9.41 L/100km |
| 30 mpg (US) | 7.84 L/100km |
| 35 mpg (US) | 6.72 L/100km |
| 40 mpg (US) | 5.88 L/100km |
| 45 mpg (US) | 5.23 L/100km |
| 50 mpg (US) | 4.7 L/100km |
| 60 mpg (US) | 3.92 L/100km |
| 70 mpg (US) | 3.36 L/100km |
| 80 mpg (US) | 2.94 L/100km |
| 100 mpg (US) | 2.35 L/100km |
| L/100km | mpg (US) |
|---|---|
| 2 L/100km | 117.61 mpg (US) |
| 3 L/100km | 78.4 mpg (US) |
| 4 L/100km | 58.8 mpg (US) |
| 5 L/100km | 47.04 mpg (US) |
| 6 L/100km | 39.2 mpg (US) |
| 7 L/100km | 33.6 mpg (US) |
| 8 L/100km | 29.4 mpg (US) |
| 9 L/100km | 26.13 mpg (US) |
| 10 L/100km | 23.52 mpg (US) |
| 12 L/100km | 19.6 mpg (US) |
| 15 L/100km | 15.68 mpg (US) |
| 18 L/100km | 13.07 mpg (US) |
| 20 L/100km | 11.76 mpg (US) |
| Vehicle type | mpg (US) | L/100km |
|---|---|---|
| Efficient hybrid | 58.8 mpg (US) | 4 L/100km |
| Small economy car | 47.04 mpg (US) | 5 L/100km |
| Compact car | 36.19 mpg (US) | 6.5 L/100km |
| Mid-size sedan | 29.4 mpg (US) | 8 L/100km |
| Large SUV | 21.38 mpg (US) | 11 L/100km |
| Thirsty pickup | 16.8 mpg (US) | 14 L/100km |
L/100km is the standard figure across continental Europe and a consumption measure: lower is better. mpg (miles per gallon) is an efficiency measure: higher is better. Watch out — the US gallon (3.785 L) is smaller than the imperial UK gallon (4.546 L), so the same fuel economy reads about 20% higher in UK mpg. km/L is the efficiency form of L/100km, common across parts of Asia and Latin America.
Because mpg and L/100km are reciprocals, you can never turn one into the other with a fixed multiplier — you always divide by the value. For more pairs, use our fuel economy conversion hub.
1 mpg (US) equals 235.21 L/100km.
30 mpg (US) equals 7.84 L/100km.
Consumption (L/100km) and efficiency (mpg, km/L) are reciprocals of each other: a higher mpg means a lower L/100km. If the mpg doubles, the L/100km halves — so there is no fixed multiplier; you divide by the value instead. That is why the curve is a hyperbola, not a straight line.
US mpg measures the miles driven per US gallon (3.785 L) of fuel — higher is better. Through the relationship L/100km = 235.21 ÷ mpg you can turn it into the European consumption figure in L/100km.
L/100km is the standard figure across continental Europe (lower is better). US mpg is used in the United States and imperial mpg in the United Kingdom — both express miles per gallon (higher is better) but use different-sized gallons. km/L is common across parts of Asia, Latin America, and Africa.
Convert any unit
The unit converter handles length, volume, weight, and more.