Because ounces and cups are both standard systems of measurement, they convert evenly. Therefore, there are exactly 8 U.S. fluid ounces in one cup.
http://www.ask.com/webanswers/Reference/Other/how...

1 cup = 8 ounces. 1 ounce = 0.12 cup.
http://wiki.answers.com/Q/How_many_cup_in_an_ounce

In the US, one standard measuring cup contains. 8 fluid ounces. but there is also a dry measure using the term cup, equal to 8 ounces. The UK cup is equal to 10 Imperial ounces, which
http://wiki.answers.com/Q/How_many_ounces_are_in_o...

There are 29.57352965 US fluid ounces contained in one milliliter. On the other hand, there are 0.0338140226 milliliters in one US fluid ounce.
http://www.ask.com/webanswers/Reference/Other/how...
