Convert Kilometers per Liter to MPG (US) (km/L to mpg)
1 kilometer per liter (km/L) = 2.352145833 miles per US gallon (mpg). 1 mpg = 0.4251437074 km/L. Example: 15 km/L = 15 × 2.352145833 = 35.2821875 mpg.
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1 km/L = 2.352145833 mpg
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk kilometer per liter to mile per US gallon converter to paste a column from Excel.
How to Convert Kilometer per Liter to MPG (US)
- 1 km/L = 2.352145833 mpg
- 1 mpg = 0.4251437074 km/L
- Example: convert 15 km/L to mpg: 15 km/L = 15 × 2.352145833 mpg = 35.2821875 mpg
Formula
mpg = km/L × 2.352145833333
Derivation from SI units:
- Distance in kilometres travelled on one litre of fuel.
- 1 mpg (US) = 1.609344 km ÷ 3.785411784 L = 0.425143707… km/L.
Both units are defined exactly, so the factor is exact. Kilometer per Liter definition: kilometer per liter; MPG (US) definition: mile per US gallon.
Worked examples
- A reading of 12 km/L converts to 28.22575 mpg.
12 km/L × 2.352145833 = 28.22575 mpg - A value of 20 km/L is 47.04291667 mpg.
20 km/L × 2.352145833 = 47.04291667 mpg
Kilometer per Liter to MPG (US) conversion table
| Kilometers per Liter (km/L) | MPG (US) (mpg) |
|---|---|
| 5 km/L | 11.76072917 mpg |
| 8 km/L | 18.81716667 mpg |
| 10 km/L | 23.52145833 mpg |
| 12 km/L | 28.22575 mpg |
| 15 km/L | 35.2821875 mpg |
| 18 km/L | 42.338625 mpg |
| 20 km/L | 47.04291667 mpg |
| 25 km/L | 58.80364583 mpg |
| 30 km/L | 70.564375 mpg |
| 40 km/L | 94.08583333 mpg |
Where it's used
Kilometers per Liter are used for car mileage in India (kmpl), Japan and Brazil, while miles per US gallon appear in EPA fuel economy ratings. Both measure fuel economy (distance per volume of fuel), so the conversion is a fixed factor.
Kilometer per Liter to other fuel economy units
| Conversion | 1 km/L equals |
|---|---|
| kilometer per liter to mile per US gallon | 2.352145833 mpg |
| kilometer per liter to liter per 100 kilometers | 100 L/100 km |
| kilometer per liter to mile per imperial gallon | 2.824809363 mpg (UK) |
Frequently asked questions
How many miles per US gallon are in 1 kilometer per liter?
1 km/L = 2.352145833 mpg.
How do I convert kilometers per liter to miles per US gallon?
Multiply the value in km/L by 2.352145833. For example, 15 km/L × 2.352145833 = 35.2821875 mpg.
Is the km/L to mpg conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (radian) and Table 8 (non-SI units accepted for use with the SI).
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "mile per gallon (U.S.)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Kilometers per Liter to MPG (US) (km/L to mpg). Retrieved October 25, 2026, from https://scientificconverters.com/fuel-economy/kilometers-per-liter-to-miles-per-gallon/
IEEE
Scientific Converters, "Convert Kilometers per Liter to MPG (US) (km/L to mpg)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/fuel-economy/kilometers-per-liter-to-miles-per-gallon/