How many ounces of water is in a regular drinking glass?

There's no single "regular" drinking glass size, so there's no definitive answer. It varies a lot!

Here's a breakdown:

* Small glass: Could hold around 6-8 ounces.

* Standard glass: Usually holds around 12 ounces.

* Large glass: Can hold 16-20 ounces or more.

To be sure, check the glass's volume markings, if it has any.