MPG to L/100 km Converter
Convert US MPG, Imperial MPG and fuel economy values to and from liters per 100 km.
Use the correct fuel-economy relationship for US MPG and Imperial MPG, which are not the same. This converter handles both plus km/L and L/100 km.
Fuel economy converter
How MPG to L/100 km Conversion Works
US MPG and Imperial MPG use different conversion constants, so the correct result depends on the fuel-economy system you start from. Higher MPG means better fuel economy, while lower L/100 km means better fuel economy.
US MPG → L/100 km = 235.214583 ÷ MPG
Imperial MPG → L/100 km = 282.480936 ÷ MPG
L/100 km → US MPG = 235.214583 ÷ L/100 km
Examples
30 US MPG to L/100 km
235.214583 ÷ 30 = 7.840486 L/100 km
40 US MPG to L/100 km
235.214583 ÷ 40 = 5.880365 L/100 km
L/100 km to US MPG
235.214583 ÷ 8 = 29.401823 US MPG
US MPG to L/100 km Conversion Table
| US MPG | L/100 km |
|---|---|
| 20 | 11.760729 |
| 25 | 9.408583 |
| 30 | 7.840486 |
| 35 | 6.720417 |
| 40 | 5.880365 |
| 45 | 5.226990 |
| 50 | 4.704292 |
| 60 | 3.920243 |
L/100 km to US MPG Conversion Table
| L/100 km | US MPG |
|---|---|
| 4 | 58.803646 |
| 5 | 47.042917 |
| 6 | 39.202431 |
| 7 | 33.602369 |
| 8 | 29.401823 |
| 9 | 26.168509 |
| 10 | 23.521458 |
| 12 | 19.601215 |
Frequently Asked Questions
For US MPG, divide 235.214583 by the MPG value. For Imperial MPG, divide 282.480936 by the value.
Use 235.214583 divided by the L/100 km value for US MPG.
Yes. US MPG and Imperial MPG are different units and produce different fuel-economy results.
30 US MPG is about 7.840486 L/100 km.
A lower L/100 km value means better fuel economy because the vehicle uses less fuel to travel the same distance.
For US MPG, divide the MPG value by 2.35214583 to get km/L. For Imperial MPG, use a different factor because the gallon size is different.