How to choose a dining table size
Two numbers decide whether a dining table works. The first is space per person: each diner needs about 24 inches (60 cm) of table edge, or 30 inches (75 cm) for roomy, comfortable seating. The second is clearance: leave at least 36 inches (90 cm) between the table edge and the walls or furniture, so people can pull out chairs and sit down. Where people need to walk behind seated guests, make that 42 to 48 inches.
So the largest table your room can take is its length and width minus about 6 feet (1.8 m) in each direction. A 12 by 10 foot dining area leaves space for a table up to 72 by 48 inches.
Worked example. Your dining area is 14 by 10 feet (168 by 120 inches) and you want to seat 8. Take off 72 inches for chairs in each direction and the table can be up to 96 by 48 inches. A standard 96 by 40 inch rectangle fits exactly, with 4 chairs along each side (96 / 24 = 4). A round table for 8 needs 66 inches across, which is wider than 48, so a rectangle is the only shape that works.
Dining table size by room size
These are real results from the calculator with 36 inches (90 cm) of clearance on every side.
| Room | Seats | Best table | Largest table that fits |
|---|---|---|---|
| 9 x 9 ft | 4 | Round 36 in, snug | 36 x 36 in |
| 10 x 10 ft | 4 | Round 42 in | 48 x 48 in |
| 10 x 10 ft | 6 | Round 48 in, snug | 48 x 48 in |
| 11 x 11 ft | 6 | Round 54 in | 60 x 60 in |
| 12 x 10 ft | 6 | Rectangle 72 x 36 in | 72 x 48 in |
| 12 x 12 ft | 8 | Round 66 in | 72 x 72 in |
| 14 x 10 ft | 8 | Rectangle 96 x 40 in | 96 x 48 in |
| 16 x 11 ft | 10 | Rectangle 108 x 42 in | 120 x 60 in |
| 18 x 11 ft | 12 | Rectangle 132 x 42 in | 144 x 60 in |
| 20 x 11 ft | 14 | Rectangle 156 x 42 in | 168 x 60 in |
Dining table sizes by number of seats
| Seats | Rectangle | Round | Square |
|---|---|---|---|
| 2 | 36 x 30 in | 30 in | 30 in |
| 4 | 48 x 30 in | 42 in | 40 in |
| 6 | 72 x 36 in | 54 in | 54 in |
| 8 | 96 x 40 in | 66 in | 64 in |
| 10 | 108 x 42 in | 78 in | n/a |
| 12 | 132 x 42 in | 90 in | n/a |
| 14 | 156 x 42 in | n/a | n/a |
Round or rectangular?
Round tables suit square rooms and smaller groups. Everyone can see and talk to each other, there are no corners to bump into, and they fit neatly under a pendant light. Rectangular tables suit long, narrow rooms and bigger gatherings, and they are easiest to extend. Square tables are cozy for four but get very wide for eight, which makes it hard to reach the middle.
Dining tables for small rooms
In a room under 10 by 10 feet, a standard rectangle for four often leaves too little space to pull out the chairs. A round table is the answer: a 36 inch round seats four snugly in a 9 by 9 foot room, and a 48 inch round seats six in a 10 by 10 room. Push one side against a wall with a bench and you gain another 18 inches or so, or choose a drop leaf or extendable table that opens up only when guests arrive.
Finish the dining room
Once you know the table size, pick a rug that keeps chair legs on it when people sit back, using the rug size calculator, and balance the wall with the wall art size calculator. For styling ideas, see our dining room decor ideas.
