What this calculator does
A pool room needs the table plus a full cue length on every side, plus a little clearance beyond the cue tip. An 8 foot table with a 58 inch cue needs a room 18.5 by 14.5 feet, which is considerably larger than most people expect.
The requirement is driven by the cue rather than the table. Every side needs room to draw the cue back fully, so the room dimension is the table dimension plus twice the cue length plus clearance. Halving the table size would not halve the room, because the cue allowance stays the same.
The formula
The room length is the table length plus twice the cue length plus 10 inches, which is 5 inches of clearance beyond the cue tip on each side. The room width uses the same allowance against the table width. The result is given in feet, inches and metres. Shorter cues can be used in tight corners, which is why the cue length is an input rather than a constant.
| Term | Meaning |
|---|---|
| Cue clearance | Room to draw the cue back fully behind the ball, which sets the requirement on every side. |
| Table size | The playing surface dimensions, conventionally quoted as 7, 8 or 9 foot. |
| Short cue | A 48 or 52 inch cue used for shots against a wall, which can reduce the practical room requirement. |
The inputs explained
| Field | What to enter |
|---|---|
| Table length (ft) | Table length in feet, usually 7, 8 or 9. |
| Table width (ft) | Table width in feet, typically half the length. |
| Cue length (in) | Cue length in inches. 58 is standard; 57 is common in the UK and shorter cues are made for tight rooms. |
When to use it
Checking whether a room fits a table
The ordinary use, and it frequently produces a smaller table than the buyer had in mind.
Choosing between table sizes
The room requirement differs by only a foot between a 7 and an 8 foot table, since the cue allowance dominates, which often makes the larger table more feasible than expected.
Planning a games room
The table has to sit centrally with the clearance on all sides, so the figure describes a clear floor area rather than a room that merely measures that overall.
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
What room does each table size need?
The three common table lengths with the same width and cue.
| Table length | Minimum room size | In metres | Table size used |
|---|---|---|---|
| 7 ft | 17.5 ft × 14.5 ft | 5.33 m × 4.42 m | 7 ft × 4 ft |
| 8 ft | 18.5 ft × 14.5 ft | 5.64 m × 4.42 m | 8 ft × 4 ft |
| 9 ft | 19.5 ft × 14.5 ft | 5.94 m × 4.42 m | 9 ft × 4 ft |
Questions
What size room do I need for a pool table?
For a standard 8 foot table with a 58 inch cue, about 18.5 by 14.5 feet of clear floor. A 7 foot table needs 17.5 by 14.5. These are minimums that allow a full cue stroke on every shot, and less than this means some shots require a short cue.
Can I use a smaller room?
Yes, with short cues for shots against the wall. Many home setups do exactly this and it works, though it is a compromise on those shots. Shorter cues of 48 or 52 inches reduce the requirement by about a foot in each affected direction.
Why does the room size barely change between table sizes?
Because twice the cue length plus clearance is nearly ten feet of the requirement regardless of the table. The table itself contributes only its own dimensions, so a foot of extra table is a foot of extra room rather than a proportional increase.
Does ceiling height matter?
Yes, although it is not in this calculation. Around 8 feet is generally considered a minimum, both for overhead lighting and for raised cue shots such as a masse. A low ceiling also makes the room feel cramped in a way the floor plan does not predict.
For another table-game layout question, see the beer pong cup calculator. For the vertical clearance a basketball hoop needs, see the dunk calculator.