Probably one of the best things I've got. I look at the grams or ounces that the serving size is and figure out how many calories, fat, etc. I'm taking in from that. For example the serving size for almonds is 30g(but the package says ~22 Almonds). I'd weight them, and at 22 almonds I'd be 10-15 grams off in either direction. Its like this with most foods. It's nice to be able to get accurate caloric amounts for fruits, veggies, chicken, beef, etc. also. Am I going off the deep end here? Maybe. I figure if I'm going to the trouble of counting calories as it is, I might as well get as accurate as possible. The little extra work I put into logging my calories also keeps my diet in check.