Fuel Economy Converter Calculator

Convert fuel economy measurements between different units quickly and accurately. This calculator supports common fuel economy units including miles per gallon (MPG), kilometers per liter (km/L), and liters per 100 kilometers (L/100km).

Understanding Fuel Economy Units

Fuel economy measures how far a vehicle can travel using a specific amount of fuel. Different regions use different units:

• Miles per gallon (MPG): Standard in US and UK
• Kilometers per liter (km/L): Used in Japan and some other countries
• Liters per 100 kilometers (L/100km): Common in Europe and Australia

Common Conversions

Here are some useful fuel economy conversion factors:

• 1 MPG = 0.425144 km/L
• 1 km/L = 2.35215 MPG
• L/100km = 235.215 / MPG
• L/100km = 100 / km/L

Applications

Fuel economy conversion is important in many contexts:

1. Car Shopping: Comparing vehicles from different markets
2. Fleet Management: Standardizing efficiency metrics
3. Travel Planning: Estimating fuel costs across regions
4. Environmental Impact: Assessing carbon footprint
5. Cost Analysis: Comparing operating costs
6. Vehicle Import/Export: Meeting regional standards

Using the Calculator

1. Enter a fuel economy value in any unit
2. The calculator automatically converts to all other units
3. Results are shown with appropriate precision

Common Fuel Economy Values

For reference, here are some typical fuel economy values:

• Small Car: 30-40 MPG (7.8-5.9 L/100km)
• Mid-size Car: 25-35 MPG (9.4-6.7 L/100km)
• SUV: 20-30 MPG (11.8-7.8 L/100km)
• Hybrid Car: 45-55 MPG (5.2-4.3 L/100km)
• Electric Car: 100-140 MPGe equivalent

Tips for Accurate Conversion

• Note that L/100km is inverse to MPG and km/L
• Lower L/100km numbers indicate better efficiency
• Higher MPG and km/L numbers indicate better efficiency
• Consider both city and highway fuel economy

Technical Notes

1. Imperial vs US Gallons:

   • This calculator uses US gallons
   • 1 US gallon = 3.78541 liters
   • 1 Imperial gallon = 4.54609 liters

2. Real-world Considerations:

   • Actual fuel economy varies with:
     • Driving conditions
     • Vehicle maintenance
     • Driving style
     • Weather conditions
     • Fuel type

3. Electric Vehicles:

   • MPGe (Miles Per Gallon equivalent) is used
   • Based on energy content comparison
   • 33.7 kWh = 1 gallon of gasoline energy