453.6 grams. Dq snowstorm has three specifications: small cup 9OZ, standard cup 12OZ and large cup 16OZ. Weight unit, 1oz=28.35g (g). Therefore, the gram number of a large cup can be calculated by 16*28.35 to get 453.6 grams. Oz is the abbreviation of the symbol ounce, which is called "ounce" in Chinese (translated as ounces in China and Hongkong). It is an English unit of measurement, and it is also called English ounces as a unit of weight.