Convert Liters per 100 km to MPG (US) (L/100 km to mpg)
Liters per 100 km and miles per US gallon are inversely related: mpg = 235.2145833 ÷ L/100 km, so 8 L/100 km = 29.40182292 mpg.
Also searched as l/100km to mpg, litres per 100 km to mpg, liters per 100km to miles per gallon, l per 100km to us mpg and 8 l/100km in mpg.
1 L/100 km = 235.2145833 mpg
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk liter per 100 kilometers to mile per US gallon converter to paste a column from Excel.
How to Convert Liter per 100 km to MPG (US)
- mpg = 235.2145833 ÷ L/100 km
- L/100 km = 235.2145833 ÷ mpg
- Example: convert 8 L/100 km to mpg: 235.2145833 ÷ 8 = 29.40182292 mpg
Formula
mpg = 235.2145833333 ÷ L/100 km
Derivation from SI units:
- Fuel used in litres per 100 km; km/L = 100 ÷ (L/100 km), so the scales are reciprocal.
- 1 mpg (US) = 1.609344 km ÷ 3.785411784 L = 0.425143707… km/L.
- Solving for mpg: mpg = 235.2145833333 ÷ L/100 km (a higher L/100 km means a lower mpg)
Both units are defined exactly, so the factor is exact. Liter per 100 km definition: liter per 100 kilometers; MPG (US) definition: mile per US gallon.
Worked examples
- A car using 8 L/100 km gets 29.40182292 mpg.
235.2145833 ÷ 8 = 29.40182292 mpg - A hybrid using 5 L/100 km gets 47.04291667 mpg.
235.2145833 ÷ 5 = 47.04291667 mpg
Liter per 100 km to MPG (US) conversion table
| Liters per 100 km (L/100 km) | MPG (US) (mpg) |
|---|---|
| 3 L/100 km | 78.40486111 mpg |
| 4 L/100 km | 58.80364583 mpg |
| 5 L/100 km | 47.04291667 mpg |
| 6 L/100 km | 39.20243056 mpg |
| 7 L/100 km | 33.60208333 mpg |
| 8 L/100 km | 29.40182292 mpg |
| 9 L/100 km | 26.1349537 mpg |
| 10 L/100 km | 23.52145833 mpg |
| 12 L/100 km | 19.60121528 mpg |
| 15 L/100 km | 15.68097222 mpg |
Where it's used
Fuel consumption in L/100 km from Canadian, Australian and European ratings is converted to US miles per gallon for comparison with EPA figures. Divide 235.215 by the L/100 km value.
Liter per 100 km to other fuel economy units
| Conversion | 1 L/100 km equals |
|---|---|
| liter per 100 kilometers to mile per US gallon | 235.2145833 mpg |
| liter per 100 kilometers to kilometer per liter | 100 km/L |
| liter per 100 kilometers to mile per imperial gallon | 282.4809363 mpg (UK) |
Frequently asked questions
What is 6 L/100 km in mpg?
6 L/100 km = 39.20243056 mpg (US) and 47.08015606 mpg (UK) (UK).
What is the formula for liters per 100 kilometers to miles per US gallon?
mpg = 235.2145833 ÷ L/100 km. The two systems are inversely related, so divide the constant by the value; do not multiply. For example, 235.2145833 ÷ 8 = 29.40182292 mpg.
Why does a higher L/100 km give a lower mpg?
Liters per 100 km counts length per unit mass (an indirect system), while miles per US gallon counts mass per unit length (a direct system). A finer yarn has a higher indirect number and a lower direct number.
Is the L/100 km 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 Liters per 100 km to MPG (US) (L/100 km to mpg). Retrieved October 25, 2026, from https://scientificconverters.com/fuel-economy/liters-per-100-km-to-miles-per-gallon/
IEEE
Scientific Converters, "Convert Liters per 100 km to MPG (US) (L/100 km to mpg)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/fuel-economy/liters-per-100-km-to-miles-per-gallon/