Dining Table Size Guide: What Fits Your Room and How Many It Seats
The most common dining-room mistake is buying for the number of seats rather than for the room. A table that seats eight but leaves 600 mm to the wall means nobody can get past a seated guest. Here's how to size it properly.
The two numbers that matter
- Width per person: about 600 mm (24 in) of table edge per diner is the standard, and 700 mm feels generous. Allow less only for occasional extra guests.
- Clearance behind chairs: about 900 mm from the table edge to a wall or furniture lets someone pull out a chair and sit down. Allow 1,050–1,200 mm if people need to walk behind seated diners.
So the formula is: room length − (2 × clearance) = maximum table length, and the same for width. A 3.6 × 3.0 m dining room with 900 mm clearances leaves room for a table up to 1.8 × 1.2 m.
Quick reference: rectangular tables
| Seats | Table size | Minimum room |
|---|---|---|
| 4 | 1.2 × 0.8 m | 3.0 × 2.6 m |
| 6 | 1.8 × 0.9 m | 3.6 × 2.7 m |
| 8 | 2.2–2.4 × 1.0 m | 4.2 × 2.8 m |
| 10 | 2.8–3.0 × 1.0–1.1 m | 4.8 × 3.0 m |
Minimum room sizes assume 900 mm clearance on every side. Add more if a walkway runs past the table.
Quick reference: round and square tables
| Seats | Round (diameter) | Square |
|---|---|---|
| 2 | 0.7–0.8 m | 0.7–0.75 m |
| 4 | 0.9–1.1 m | 0.9–1.0 m |
| 6 | 1.2–1.4 m | — |
| 8 | 1.5–1.8 m | 1.4–1.5 m |
Round or rectangular?
- Round tables suit square rooms and small spaces. With no corners to bump into, a round table squeezes in one more person, and everyone can see each other. Beyond about 1.5 m across, you can't reach the middle or chat across it.
- Rectangular tables suit long, narrow rooms and open-plan spaces, and they scale better for large groups.
- Oval tables give you the seating of a rectangle with the softer flow of a round, which is good when a walkway passes one end.
- Extendable tables are the best answer if you host a few times a year. Plan the room around the closed size and check the extended size still leaves at least 750 mm.
Height and legroom
Dining tables are usually 740–760 mm high, and chairs have a seat height of about 450–480 mm. That leaves roughly 300 mm between seat and tabletop. Check the table apron (the frame under the top) too: you want at least 600–650 mm from floor to apron for knees. Trestle and pedestal bases are easiest to seat people around. Four corner legs limit where the end chairs go.
Lighting and rugs
Hang a pendant about 750–850 mm above the tabletop, and make it about half to two-thirds the table's width. If you use a rug under the table, it needs to extend 600–750 mm beyond the table on every side, so the back chair legs stay on the rug when someone pulls back.
Test it in 3D
Open the Dining Room sample, which has a table with six chairs, and set your real room size in the Room tab. Select the table and use the size steppers to try a longer or narrower top. Then switch to Floor Plan view to check you still have 900 mm all round.
Try this in 3D: Open the Dining Room sample