How big is a cup?

There are multiple definitions for the size of a cup. These are some of the common definitions:

- A cup in US customary measurements is precisely 8 fluid ounces, which is approximately 236.59 milliliters.

- In the Imperial System, a cup in the United Kingdom traditionally consists of 10 Imperial fluid ounces, which is about 284.131 milliliters.

- A tea cup commonly refers to a cylindrical porcelain cup in which tea is typically served. The volume can vary significantly, but it usually ranges between 180 to 240 milliliters.

- In Australia, a metric cup is often used, containing 250 milliliters, though it is typically marked as 250ml.

- In cooking and baking, a measuring cup is frequently employed. The size can differ based on the recipe, but typically, a measuring cup holds 240 milliliters.

- A cup in the metric system is precisely 100 milliliters.

It is important to note that these are general definitions, and the precise volume referred to as "a cup" may vary depending on region, context, and industry.