Enter your Starting Odometer Reading, Ending Odometer Reading (or Trip Distance directly), and Fuel Used to calculate your Fuel Efficiency in MPG or metric equivalents — plus your Cost per Mile and Total Trip Fuel Cost if you add a Fuel Price per Unit.
Fuel Efficiency
--
Fuel Efficiency (Metric)
--
Fuel Consumption
--
Cost per Mile
--
Total Trip Fuel Cost
--
To calculate MPG, divide the distance traveled by the amount of fuel used. For example, if you drove 300 miles and used 12 gallons of gas, your MPG is 300 ÷ 12 = 25 MPG.
A US gallon equals 3.785 liters, while an Imperial gallon equals 4.546 liters. Imperial gallons are used in the UK and some Commonwealth countries, making Imperial MPG calculations about 20% higher than US MPG for the same vehicle.
You can improve gas mileage by maintaining proper tire pressure, removing excess weight, avoiding aggressive driving, keeping up with regular maintenance, and using the recommended grade of motor oil for your vehicle.
Liters per 100 kilometers (L/100km) measures fuel consumption rather than efficiency. Lower L/100km numbers indicate better fuel economy. To convert from MPG to L/100km, use the formula: L/100km = 235.21 ÷ MPG (US).
Yes, resetting your trip odometer when you fill up makes it easier to track distance traveled. Record both odometer readings and the amount of fuel added for the most accurate mileage calculation.
EPA ratings are laboratory estimates under controlled conditions. Real-world MPG can vary due to driving habits, traffic conditions, weather, vehicle maintenance, terrain, and use of accessories like air conditioning.
Calculate your fuel mileage regularly, ideally every few fill-ups, to monitor your vehicle's performance. Sudden decreases in fuel efficiency may indicate maintenance issues that need attention.