Fluid Ounces to Quarts Conversion To convert fluid ounces to quarts, multiply the fluid ounce value by 0.03125 or divide by 32. For example, to calculate how many quarts is 16 fl oz of water, multiply 16 by 0.03125, that makes half quart is 16 fl oz.

32 Since one cup equals to eight fluid ounces, and a quart equals to four cups, then 32 fluid ounces equal to a quart.