I jumped into Java programming today while sick and home from work. I made a simple program for calculating mileage and range on a gas tank. You can find it here: <http://www.atlanticz.ca/zclub/techtips/calcs/fuel/index.html> I will be writing better programs down the road for calculating power, turbo sizing, converting quantities, etc I'll be improving the fuel calculations page by adding new fields for fuel cost, Imperial gallons and L/100km. Enjoy