Within the system of customary portion, there is 32 fluid ounces of one liquid quart in the United States. This scale is included in a bigger system where 8 ounces amount to a cup, 16 ounces amount to a pint (two cups) and 32 ounces amount to a quart (two pints). This conversion is critical to the process of cooking, baking, and measuring fluids and the calculation of recipes and volumes of fluids is done correctly.