Fuel Economy Calculator

Created by: Daniel Hayes
Last updated:
Calculate your vehicle's fuel economy in MPG or L/100km, track fuel consumption patterns, and estimate trip costs. This comprehensive fuel efficiency calculator helps you monitor your vehicle's performance and optimize your driving for better gas mileage.
What is a Fuel Economy Calculator?
A Fuel Economy Calculator is a tool that helps you calculate your vehicle's fuel efficiency, typically measured in miles per gallon (MPG) or liters per 100 kilometers (L/100km). This calculator allows you to determine how fuel-efficient your vehicle is based on the distance traveled and the amount of fuel consumed.
Understanding your vehicle's fuel economy is crucial for budgeting, environmental impact assessment, and making informed decisions about vehicle usage and maintenance.
Fuel Economy Calculation Formulas
The basic formula for calculating fuel economy is:
Metric System (L/100km)
Imperial System (MPG)
How to Calculate Fuel Economy: Example
Metric Example
If you traveled 500 kilometers and used 45 liters of fuel:
Fuel Economy = (45 L / 500 km) × 100 = 9 L/100km
Imperial Example
If you traveled 300 miles and used 10 gallons of fuel:
Fuel Economy = 300 miles / 10 gallons = 30 MPG
Common Applications
- Vehicle Comparison: Compare fuel efficiency between different vehicles
- Trip Planning: Estimate fuel costs for upcoming trips
- Budgeting: Calculate monthly fuel expenses
- Environmental Impact: Assess your vehicle's carbon footprint
- Maintenance Monitoring: Track changes in fuel efficiency over time
Sources and References
- U.S. Department of Energy. (2023). Fuel Economy Guide. Retrieved from fueleconomy.gov
- European Environment Agency. (2023). Monitoring CO2 emissions from passenger cars and vans.
- International Energy Agency. (2023). Fuel Economy in Major Car Markets.