dedede. there is to many things that can effect your yeild so its hard to say. what type of lights, soil or hydro, what nutes, how big is the plant going to be, what strain, are you gonna do any lst, see its just goes on and on. maybe 1 oz maybe 6 oz. on average indoors first plant just figure 1 oz and if you get more then its a bonus. how many plants have your got started?? don't count your chickens before they hatch.