So i have a math/cooking question?

Fluid ounces are more than dry ounces so don't listen to the girl above you. You would have to weigh it. If you don't have a kitchen scale, see if you can tell how many ounces are in the bottle of the spices. If it has the ounces then try to divide the # of ounces by 1/2 for the 1/2 ounces you need. For instance if it is a 8 ounce bottle divided by 1/2 = 16 servings in the bottle try to measure out 1/16 of the bottle. I know its hard but you can eyeball it.