This online calculator converts miles per U.S. gallon (MPG, US) into liters per 100 kilometers (L/100 km). MPG (US) measures distance traveled per U.S. liquid gallon. L/100 km measures fuel volume used to travel 100 kilometers. Use MPG (US) or mpg for U.S. customary reporting. Use L/100 km for metric reporting common in Europe and many other countries.
MPG (US) to L/100 km Converter
Enter fuel efficiency in miles per U.S. gallon (MPG) below and press Convert to get liters per 100 kilometers (L/100 km). Higher MPG means better fuel efficiency. Lower L/100 km means better fuel efficiency. This calculator converts between them.
Miles per U.S. Gallon (MPG)
Result in Liters per 100 km (L/100 km)
How to use this tool
- Enter a numeric MPG (US) value in the input field.
- Choose decimal precision for the result if available.
- Press Convert to compute L/100 km. The exact calculation and numeric result are shown.
- Use Copy Result to copy the L/100 km value to clipboard.
- Use Reset or Clear to restore defaults and remove previous values.
- Input validation: values must be numeric and greater than zero; negative or zero values are rejected.
Definitions of the units
Miles per U.S. gallon (MPG, US)
Abbreviations: mpg, MPG (US when disambiguating). System: United States customary / US customary units (distance per fuel volume). Definition: number of statute miles a vehicle travels using one U.S. liquid gallon of fuel. One U.S. liquid gallon = 3.785411784 liters. In relation to the other unit used here: 1 MPG (US) corresponds to 235.214583 L/100 km when inverted in the conversion formula (see formula section). Use: primary fuel-economy metric in the United States and commonly used in EPA ratings.
Liters per 100 kilometers (L/100 km)
Abbreviation: L/100 km. System: SI-derived metric (volume per distance scaled to 100 km). Definition: liters of fuel consumed to travel 100 kilometers. One liter = 0.264172052 U.S. liquid gallons; one kilometer = 0.621371192 statute miles. In relation to the other unit used here: 1 L/100 km corresponds to 235.214583 MPG (US) through the standard conversion relationship (see formula section). Use: standard in most countries outside the United States for reporting vehicle fuel consumption.
Conversion formula and authoritative source
Formula (plain text): L/100 km = 235.214583 ÷ MPG (US)
Authoritative source: Wikipedia — Fuel economy in automobiles
Conversion table (MPG (US) → L/100 km)
| MPG (US) | L/100 km |
|---|---|
| 5 | 47.043 |
| 10 | 23.521 |
| 15 | 15.681 |
| 20 | 11.761 |
| 25 | 9.409 |
| 30 | 7.840 |
| 35 | 6.720 |
| 40 | 5.880 |
| 45 | 5.227 |
| 50 | 4.704 |
| 60 | 3.920 |
| 70 | 3.360 |
| 80 | 2.940 |
| 100 | 2.352 |
| 120 | 1.960 |
| 150 | 1.568 |
| 200 | 1.176 |
| 235.214583 | 1.000 |
| 300 | 0.784 |
| 400 | 0.588 |
Real-world examples with exact conversions
These use representative, common fuel-efficiency values for vehicle categories (typical published combined figures for those classes). Values are rounded to three decimals for clarity.
- Hybrid compact car (50 MPG US) → 4.704 L/100 km.
- Small city car (40 MPG US) → 5.880 L/100 km.
- Compact sedan (35 MPG US) → 6.720 L/100 km.
- Midsize sedan (30 MPG US) → 7.840 L/100 km.
- Compact crossover SUV (28 MPG US) → 8.401 L/100 km.
- Family SUV (25 MPG US) → 9.409 L/100 km.
- Light pickup truck (20 MPG US) → 11.761 L/100 km.
- Large SUV (18 MPG US) → 13.067 L/100 km.
- Heavy-duty pickup/performance car (15 MPG US) → 15.681 L/100 km.
- High-consumption performance car (12 MPG US) → 19.601 L/100 km.
Notes on accuracy and variability
The formula above is exact given the fixed constants (1 US gal = 3.785411784 L, 1 mile = 1.609344 km). Real-world fuel consumption differs from test-cycle ratings because of driving conditions, load, maintenance, fuel quality and test methodology. Use converted values as a standardized reference.
What do you use this tool for and would you like any other online calculators built? Please let us know in the comments.
CalcuLife.com
Leave A Comment