Quick Scoop
A **regulation size pool table** is usually **9 feet by
4.5 feet** , which is the common tournament size. More broadly, “regulation”
refers to the **2:1 length-to-width ratio** , so other tables can also count
if they keep that ratio.
What it means
For most people, “regulation size” means the full-size
table used in professional play: **9 ft long, 4.5 ft wide**. Some sources also
note that the key rule is the **2:1 ratio** , not just one exact footprint.
Common sizes
- 9 ft : standard tournament size.
- 8 ft : often used for home play, and can still fit the regulation ratio.
- 7 ft : common in bars and smaller rooms, though many sources treat this as a smaller standard size rather than the classic tournament table.
Simple rule of thumb
If you want the most common “regulation” answer,
think **9 x 4.5 feet**. If you mean “regulation” in the broader technical
sense, it’s any pool table built to a **2:1 playing-surface ratio**.
Room space
A regulation table also needs enough clearance for cue
strokes, so room size matters just as much as the table itself. For a 9-foot
table, one guide lists a minimum room size of about **14'10" x 19'**.
Bottom line
If someone asks, “What is a regulation size pool table?”
the safest short answer is: **a 9-foot table with a 4.5-foot width, or more
generally any table with a 2:1 length-to-width ratio**.