How many tablespoons 17 grams of a substance would equal depends on what the substance is. For a heavier substance, 17 grams would fill less volume than 17 grams of a lighter substance. For water, 17 grams is equal to 1.13 tablespoons. For sugar, 17 grams is equal to 1.09 tablespoons. Converting grams to tablespoons or converting weights into volumes is a necessary tool for culinarians (specialty cooks) and culinary students as well as others. The abbreviation for grams is g and the abbreviation for tablespoons is tbsp or T.