Cooking Conversion Chart Cup to Fluid Ounces 1 cup = 8 fl ounces¾ cup = 6 fl ounces⅔ cup = 5 fl ounces½ cup = 4 fl ounces⅓ cup = 3 fl ounces¼ cup = 2 fl ounces Prev2 of 3Next Share this:Click to share on Facebook (Opens in new window)Click to share on X (Opens in new window)