Printable chart
Fuel Economy Conversion Chart
Printable fuel economy conversion chart for mpg, L/100km and km/L. Print this table or use the API and calculators for custom decimal precision.
Fuel Economy
Core conversion table
| Input | Equivalent | Unit pair |
|---|---|---|
| 30 miles per gallon | 7.8404861 liters per 100 km | mpg -> l/100km |
| 8 liters per 100 km | 29.401822875 miles per gallon | l/100km -> mpg |
| 30 miles per gallon | 12.754311241 kilometers per liter | mpg -> km/l |
| 12 kilometers per liter | 28.22574996 miles per gallon | km/l -> mpg |
| 15 kilometers per liter | 6.66666666667 liters per 100 km | km/l -> l/100km |
Guide & details
How to use this chart
Use the table for quick checks, classroom handouts and desk references. For values not shown here, open the converter or call the API with your own value, from unit and to unit.
Best uses for this chart
The Fuel Economy Conversion Chart is built as a quick reference after the table, so the printable conversion values stay first and the explanatory content stays below the core task.
- Comparing car fuel-economy figures across US MPG, L/100km and km/L markets.
- Estimating trip cost, fuel use or vehicle efficiency before switching to the fuel-cost calculator.
- Avoiding the common mistake of treating reciprocal fuel-economy units as simple linear units.
Chart accuracy notes
- MPG, L/100km and km/L include reciprocal relationships; higher MPG is better, while lower L/100km is better.
- Trip cost estimates should use the fuel-cost calculator because fuel price and distance are separate variables.
Common chart mistakes
- Do not compare MPG and L/100km as if both move in the same direction. Higher MPG is better; lower L/100km is better.
- Do not estimate trip cost from efficiency alone; distance and fuel price are separate inputs.
- Check whether the source vehicle data is city, highway, combined or real-world average.
Next steps from this reference
- Use the fuel-cost calculator for trip cost.
- Compare vehicles only after matching city/highway/combined context.
- Convert back to verify reciprocal-unit direction.