30 mpg = 7.84 L/100km
Also: 12.75 km/L (kmpl)
| mpg | L/100km | km/L |
|---|---|---|
| 24 | 9.8 | 10.2 |
| 26 | 9.05 | 11.05 |
| 28 | 8.4 | 11.9 |
| 30 | 7.84 | 12.75 |
| 32 | 7.35 | 13.6 |
| 34 | 6.92 | 14.45 |
| 36 | 6.53 | 15.31 |
International System of Units (SI) measurements
Traditional British and American measurements
mpg → L/100km: L/100km = 235.215 ÷ mpg
mpg → km/L (kmpl): km/L = mpg × 0.4251
L/100km → mpg: mpg = 235.215 ÷ L/100km
These formulas use US gallons. UK (imperial) mpg uses a larger gallon (4.546 L vs 3.785 L), so UK 50 mpg ≈ 5.65 L/100km rather than 4.70 L/100km.