It depends on the bottle. The normal sized bottles have 16 ounces in them which is 2 cups. Some of the larger bottles will have 20 or 24 ources (2.5 or 3 cups). Every 8 ounces equals one cup. Now as far as needing 8 cups of water each day goes that is old information.
A gigabyte (GB) is a measure of computer data storage capacity that is roughly equivalent to 1 billion bytes. A gigabyte is two to the 30th power or 1,073,741,824 in decimal notation. The term is pronounced with two hard Gs. The prefix giga comes from a Greek word meaning giant.
Webopedia explains what the phrase 250 GB means in reference to data storage capacity and Internet service provider data transfer limits. One gigabyte (abbreviated as GB and called 'gig' as slang) equals 2 to the 30th power (1,073,741,824) bytes. One gigabyte is more commonly characterized as being 1,024 megabytes (MB). It is a measurement for digital information. In computing, the phrase 250 GB (or 250 gigabytes) is most commonly used in reference to disk storage and also data transmission (transfer capacity) for Internet account usage.