Table sizes are all measured by the playing surface (across the shorter side of the table from the cloth covered nose of the cushion rubber to the opposite cushion rubber nose) See diagram on http://www.gameroompimps.com/replacementfelts.htm.

The Standard Pool Table Sizes are:

7 Feet - 39" x 78" Playing Surface
8 Feet - 44" x 88" Playing Surface
8 Feet Oversized - 46" x 92" Playing Surface
9 Feet - 50" x 100" Playing Surface

The 7 foot tables are usually the size tables you find in bars or coin-op pool halls. The larger the table, the bigger the challenge. Most people prefer the 8 foot size because it is just the perfect level of challenge for casual players. Serious players often prefer the 9 foot size, though they usually have to go for the smaller 8 foot table due to room size constraints.

Speaking of which...there is something that you may or may not know about those room size charts you see all over the internet. They often underestimate the amount of space you need to play pool comfortably and properly. First you have to consider the size of your pool cue. Let's say you went for the smaller standard 52" cue. You need to allow for not only the length of the cue, but also at least 4 inches for stroke. So with a 52" cue plus 4" for stroke on each side of the table, you will need a minimum of 112" around your table for optimal play. For an 8 foot table that has a 44" x 88" playing field, your room should ideally be 13 feet wide by 17 feet long.

If you are really really close to that size, but a tad smaller, you may be able to get the 8 foot table as long as you purchase shorter cues. Cues do come in a 48" size that will decrease the area needed around to table by as much as 2 feet. Doesn't sound like much, but 2 feet can make all the difference in the world.

If you have any questions or need some advice on choosing the right pool cue for you, just ask a pimp!