Determine how many calories you craving to eat from fat. Subtract the number of calories you infatuation to acquire best weight loss diet through protein from the number you got from the calorie calculator. For instance, if you dependence 2,200 calories and you're getting 480 from protein, subtract 480 from 2,200: 2,200-480 = 1720. Also, subtract your carbohydrate calories: 1720-200= 1520.