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Calculate key data like fuel consumption per 100km (L/100km) and cost per kilometer based on your driving distance, fuel volume, and gas price.
Enter distance and fuel consumed to calculate
Want to know exactly how much your car costs to run? The fuel consumption calculator is a tool designed to accurately quantify your vehicle's fuel economy. Based on your inputted driving distance, consumed fuel volume, and current gas price, it calculates multiple dimensions of fuel cost metrics. Fuel consumption per 100 kilometers (L/100km) is the core metric for measuring a car's fuel economy, representing the number of liters of fuel consumed for every 100 kilometers driven. The core principle of this tool is to use simple mathematical formulas to link driving distance, fuel volume, and gas price, outputting practical data such as fuel consumption per 100km, fuel cost per 100km, fuel cost per kilometer, and fuel consumption per kilometer, helping you clearly understand your driving costs.
Q: How does the fuel consumption calculator work?
A: The core formula is: Fuel consumption per 100km = (Fuel Volume ÷ Driving Distance) × 100. For example, if you added 45 liters of fuel and drove 550 kilometers, the fuel consumption per 100km is approximately (45 / 550) * 100 = 8.18 L/100km.
Q: The calculated result doesn't match my car's dashboard fuel consumption. Which one is accurate?
A: The result calculated by this tool is generally more reliable. The dashboard fuel consumption is usually an estimated value from the trip computer and may have errors. The fuel consumption calculated from actual fuel volume and driving distance (i.e., "actual fuel consumption") more truly reflects the vehicle's fuel economy and your driving habits, making it a reliable basis for cost accounting and comparison.
Please ensure the units of your input data are correct: distance in kilometers, fuel volume in liters, and gas price in yuan/liter. To get the most representative average fuel consumption, it is recommended to record data from multiple consecutive full tanks of gas for calculation. A single calculation result may fluctuate due to factors like road conditions and vehicle load. The calculation results of this tool are for personal driving cost reference only.
To get the most accurate long-term average fuel consumption, we recommend using the "full tank method" to record: every time you refuel, fill the tank until the pump clicks off automatically, and record the current odometer reading. The next time you refuel, fill it up again until it clicks off, and record the new odometer reading and the fuel volume added. The difference in mileage between the two refuels is your "driving distance," and the fuel added is your "fuel volume." Repeating this process 3 to 5 times and taking the average can effectively smooth out deviations caused by special road conditions (like highway driving or traffic jams) during a single trip. For example: if the odometer reads 10,000 km after the first refuel, and 10,550 km when you fill up the second time with 45 liters of fuel, your inputs for this fuel consumption calculation would be: driving distance 550 km, fuel volume 45 liters.
