* Mills usually refer to thousandths of a dollar, a unit of currency.
* Cups are a unit of volume, often used in cooking and baking.
To answer your question, you need to clarify what you mean by "mills".
* Are you asking about a specific type of grain called "mills"? In this case, the answer would depend on the size and density of the grain.
* Are you trying to convert a volume in cups to a volume in some other unit? If so, please specify the unit you want to convert to.
For example:
* "How many milliliters are in one cup?"
* "How many grams of flour are in one cup?"
Once you clarify what you're asking, I can help you with the conversion!