Fuel Economy converter
Kilometers per Liter to Miles per Gallon (US)
Converting Kilometers per Liter to Miles per Gallon (US) is a single multiplication when you know the factor. One km/L equals 2.352146 mpg, so multiply the value in km/L by 2.352146. The calculator below works in both directions and accepts decimals.
Formula 1 km/L = 2.352146 mpg
Need the other direction? Miles per Gallon (US) to Kilometers per Liter.
How to convert Kilometers per Liter to Miles per Gallon (US)
Kilometres per litre is a direct fuel-economy measure used in many markets. US miles per gallon equals about 0.425 km/L; the UK gallon is larger.
To convert Kilometers per Liter to Miles per Gallon (US), multiply the value in km/L by 2.352146. For example, 10 km/L × 2.352146 = 23.521458 mpg. This works because the ratio between the two units is constant for every value in fuel economy.
Worked examples
| km/L | mpg |
|---|---|
| 1 km/L | 2.352146 mpg |
| 2.5 km/L | 5.880365 mpg |
| 5 km/L | 11.760729 mpg |
| 10 km/L | 23.521458 mpg |
| 25 km/L | 58.803646 mpg |
| 50 km/L | 117.607292 mpg |
| 100 km/L | 235.214584 mpg |
Reverse conversion
| mpg | km/L |
|---|---|
| 1 mpg | 0.42514371 km/L |
| 5 mpg | 2.125719 km/L |
| 10 mpg | 4.251437 km/L |
| 25 mpg | 10.628593 km/L |
| 50 mpg | 21.257185 km/L |
| 100 mpg | 42.514371 km/L |
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 km/L is 2,352.15 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.
km/L 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.
| Kilometers per Liter (km/L) | Miles per Gallon (US) (mpg) |
|---|---|
| 1 km/L | 2.352146 mpg |
| 2 km/L | 4.704292 mpg |
| 3 km/L | 7.056438 mpg |
| 4 km/L | 9.408583 mpg |
| 5 km/L | 11.760729 mpg |
| 6 km/L | 14.112875 mpg |
| 7 km/L | 16.465021 mpg |
| 8 km/L | 18.817167 mpg |
| 9 km/L | 21.169313 mpg |
| 10 km/L | 23.521458 mpg |
| 11 km/L | 25.873604 mpg |
| 12 km/L | 28.22575 mpg |
| 13 km/L | 30.577896 mpg |
| 14 km/L | 32.930042 mpg |
| 15 km/L | 35.282188 mpg |
| 16 km/L | 37.634333 mpg |
| 17 km/L | 39.986479 mpg |
| 18 km/L | 42.338625 mpg |
| 19 km/L | 44.690771 mpg |
| 20 km/L | 47.042917 mpg |
| 21 km/L | 49.395063 mpg |
| 22 km/L | 51.747208 mpg |
| 23 km/L | 54.099354 mpg |
| 24 km/L | 56.4515 mpg |
| 25 km/L | 58.803646 mpg |
| 26 km/L | 61.155792 mpg |
| 27 km/L | 63.507938 mpg |
| 28 km/L | 65.860083 mpg |
| 29 km/L | 68.212229 mpg |
| 30 km/L | 70.564375 mpg |
| 31 km/L | 72.916521 mpg |
| 32 km/L | 75.268667 mpg |
| 33 km/L | 77.620813 mpg |
| 34 km/L | 79.972958 mpg |
| 35 km/L | 82.325104 mpg |
| 36 km/L | 84.67725 mpg |
| 37 km/L | 87.029396 mpg |
| 38 km/L | 89.381542 mpg |
| 39 km/L | 91.733688 mpg |
| 40 km/L | 94.085833 mpg |
| 41 km/L | 96.437979 mpg |
| 42 km/L | 98.790125 mpg |
| 43 km/L | 101.142271 mpg |
| 44 km/L | 103.494417 mpg |
| 45 km/L | 105.846563 mpg |
| 46 km/L | 108.198708 mpg |
| 47 km/L | 110.550854 mpg |
| 48 km/L | 112.903 mpg |
| 49 km/L | 115.255146 mpg |
| 50 km/L | 117.607292 mpg |
| 60 km/L | 141.12875 mpg |
| 70 km/L | 164.650208 mpg |
| 80 km/L | 188.171667 mpg |
| 90 km/L | 211.693125 mpg |
| 100 km/L | 235.214584 mpg |
Frequently asked questions
How many Miles per Gallon (US) are in 1 Kilometers per Liter?
1 km/L equals 2.352146 mpg.
How do I convert Kilometers per Liter to Miles per Gallon (US)?
Multiply the km/L value by 2.352146. Example: 25 km/L = 58.803646 mpg.
What is 2.5 km/L in mpg?
2.5 km/L = 5.880365 mpg.
Is the km/L 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.