2025-08-31 00:00:00 The fuel cost calculator can help you figure out how much fuel you need for your trip and how much it will cost. Enter the distance (in miles or kilometers), the average fuel consumption for your vehicle (in MPG US, MPG UK, km/L or L/100 km) and the price of fuel and the calculator will show you how much fuel your vehicle is predicted to consume (Fuel Total) and how much a trip will cost (Total Cost). You can optionally add the number of passengers and the calculator will calculate you the cost of your trip per passenger.