Fuel Economy converter
Liters per 100km to Miles per Gallon (US)
If you need to know how many Miles per Gallon (US) one Liters per 100km contains, the answer is 235.214584. The conversion is linear, so 10 L/100km is 23.521458 mpg and 100 L/100km is 2.352146 mpg. Use the converter for any other value.
Formula 1 L/100km = 235.214584 mpg
Need the other direction? Miles per Gallon (US) to Liters per 100km.
How to convert Liters per 100km to Miles per Gallon (US)
Litres per 100 km is an inverse measure: lower is better, and it is not linear. US miles per gallon equals about 0.425 km/L; the UK gallon is larger.
To convert Liters per 100km to Miles per Gallon (US), multiply the value in L/100km by 235.214584. For example, 10 L/100km × 235.214584 = 23.521458 mpg. This works because the ratio between the two units is constant for every value in fuel economy.
Worked examples
| L/100km | mpg |
|---|---|
| 1 L/100km | 235.214584 mpg |
| 2.5 L/100km | 94.085833 mpg |
| 5 L/100km | 47.042917 mpg |
| 10 L/100km | 23.521458 mpg |
| 25 L/100km | 9.408583 mpg |
| 50 L/100km | 4.704292 mpg |
| 100 L/100km | 2.352146 mpg |
Reverse conversion
| mpg | L/100km |
|---|---|
| 1 mpg | 235.214584 L/100km |
| 5 mpg | 47.042917 L/100km |
| 10 mpg | 23.521458 L/100km |
| 25 mpg | 9.408583 L/100km |
| 50 mpg | 4.704292 L/100km |
| 100 mpg | 2.352146 L/100km |
When this conversion is useful
This is the calculation you need when you are comparing a car's consumption with a different unit system. Because the factor is fixed, you can use the same number for a single measurement or for a batch: 1,000 L/100km is 0.23521458 mpg.
Is the conversion exact?
No: fuel economy has inverse units. Litres per 100 km and gallons per mile fall as efficiency rises, so the conversion divides rather than multiplies.
Reference: BIPM SI Brochure and NIST SP 811. Last reviewed: 2026-11-01.
L/100km to mpg conversion chart
The chart lists the most requested values. For a value that is not here, use the converter at the top of the page.
| Liters per 100km (L/100km) | Miles per Gallon (US) (mpg) |
|---|---|
| 1 L/100km | 235.214584 mpg |
| 2 L/100km | 117.607292 mpg |
| 3 L/100km | 78.404861 mpg |
| 4 L/100km | 58.803646 mpg |
| 5 L/100km | 47.042917 mpg |
| 6 L/100km | 39.202431 mpg |
| 7 L/100km | 33.602083 mpg |
| 8 L/100km | 29.401823 mpg |
| 9 L/100km | 26.134954 mpg |
| 10 L/100km | 23.521458 mpg |
| 11 L/100km | 21.383144 mpg |
| 12 L/100km | 19.601215 mpg |
| 13 L/100km | 18.09343 mpg |
| 14 L/100km | 16.801042 mpg |
| 15 L/100km | 15.680972 mpg |
| 16 L/100km | 14.700911 mpg |
| 17 L/100km | 13.836152 mpg |
| 18 L/100km | 13.067477 mpg |
| 19 L/100km | 12.379715 mpg |
| 20 L/100km | 11.760729 mpg |
| 21 L/100km | 11.200694 mpg |
| 22 L/100km | 10.691572 mpg |
| 23 L/100km | 10.226721 mpg |
| 24 L/100km | 9.800608 mpg |
| 25 L/100km | 9.408583 mpg |
| 26 L/100km | 9.046715 mpg |
| 27 L/100km | 8.711651 mpg |
| 28 L/100km | 8.400521 mpg |
| 29 L/100km | 8.110848 mpg |
| 30 L/100km | 7.840486 mpg |
| 31 L/100km | 7.587567 mpg |
| 32 L/100km | 7.350456 mpg |
| 33 L/100km | 7.127715 mpg |
| 34 L/100km | 6.918076 mpg |
| 35 L/100km | 6.720417 mpg |
| 36 L/100km | 6.533738 mpg |
| 37 L/100km | 6.357151 mpg |
| 38 L/100km | 6.189857 mpg |
| 39 L/100km | 6.031143 mpg |
| 40 L/100km | 5.880365 mpg |
| 41 L/100km | 5.736941 mpg |
| 42 L/100km | 5.600347 mpg |
| 43 L/100km | 5.470107 mpg |
| 44 L/100km | 5.345786 mpg |
| 45 L/100km | 5.226991 mpg |
| 46 L/100km | 5.113361 mpg |
| 47 L/100km | 5.004566 mpg |
| 48 L/100km | 4.900304 mpg |
| 49 L/100km | 4.800298 mpg |
| 50 L/100km | 4.704292 mpg |
| 60 L/100km | 3.920243 mpg |
| 70 L/100km | 3.360208 mpg |
| 80 L/100km | 2.940182 mpg |
| 90 L/100km | 2.613495 mpg |
| 100 L/100km | 2.352146 mpg |
Frequently asked questions
How many Miles per Gallon (US) are in 1 Liters per 100km?
1 L/100km equals 235.214584 mpg.
How do I convert Liters per 100km to Miles per Gallon (US)?
Multiply the L/100km value by 235.214584. Example: 25 L/100km = 9.408583 mpg.
What is 2.5 L/100km in mpg?
2.5 L/100km = 94.085833 mpg.
Is the L/100km to mpg conversion exact?
No: fuel economy has inverse units. Litres per 100 km and gallons per mile fall as efficiency rises, so the conversion divides rather than multiplies.
Does the calculator work offline?
Yes. The conversion runs in your browser with JavaScript, so it works after the page has loaded, even without a connection.