Fat Calculators...

Does anyone know any equations or have links to calculators to use when designing a diet. I am looking for calories burned, calories needed for maintenance, basically everything you need to know, any help or links would be greatly appreciated, thanks!

USE THE SEARCH FEATURE!!!

massive eating part 1

and maybe in the follow up parts too, havent read them in a while.

I did use the search feature, all i got was the Massive Eating, i am not looking to gain weight, any other help is appreciated.