Calculate the fuel needed and the cost of a trip from the distance, your vehicle's mileage and today's fuel price.
Use the Mileage Calculator: fill the tank, drive, then refill and divide km by litres.
Yes, using AC can lower mileage by 5–15%.
Yes, along with the total litres and total cost.
No. Everything is worked out in your browser and nothing you type is sent to a server.