Mike J answered One cup is equal to 8 fluid ounces. To find how many ounces are in 1/4 of a cup, you multiply 8 by 1/4, or divide by 4 (both are the same). 1/4 of a cup is equal to 2 fluid ounces.8*(1/4) = 2 fluid ounces.8/4 = 2 fluid ounces.