Dining
Dining Table Size Calculator
Size a dining table for your guests. Enter how many people you seat and the table shape, and we return recommended table dimensions plus the minimum room size including chair and walkway clearance.
Last updated: June 2026
Dining table sizing principles
The right dining table fits the people who need to sit at it comfortably, leaves room for chairs to be pushed back, and leaves a clear path to walk around the room.
Formula used
Table length = seats per long side × 60 cm per person
Table width = 90 cm (standard)
Round: diameter = (seats × 60) / π
Min. room width = table width + (90 cm chair clearance × 2) + (90 cm walkway × 2)
Min. room length = table length + (90 cm chair clearance × 2) + (90 cm walkway × 2)
Worked examples
6 seats rectangular: 3 per side × 60 = 180 cm length, 90 cm width. Min. room = 450 × 540 cm.
4 seats round: diameter = (4 × 60) / π ≈ 76 cm, use 90 cm. Min. room ≈ 450 cm square.
How to use this calculator
- Enter the number of people you regularly need to seat.
- Choose the table shape.
- Check the minimum room dimensions — if smaller, consider a round table or extending design.
Dining table size reference
| Seats | Rectangular | Round diameter | Min. room (rect.) |
|---|---|---|---|
| 2 | 75 × 75 cm | 75 cm | 3.3 × 3.3 m |
| 4 | 120 × 80 cm | 90–100 cm | 4.0 × 3.6 m |
| 6 | 180 × 90 cm | 120–135 cm | 4.5 × 5.4 m |
| 8 | 210 × 90 cm | 150 cm | 4.5 × 5.7 m |
Notes & limitations
This calculator provides minimum recommended dimensions. Related: Rug Size Calculator · Sofa Size Calculator.
Frequently Asked Questions
What size dining table do I need for 6 people?
A rectangular table for 6 is typically 150–180 cm × 90 cm. Allow 60 cm per person on the long sides. Add 90 cm chair clearance each side plus 90 cm walkway = minimum room 360 × 420 cm.
How much space do you need around a dining table?
Allow 90 cm between the table edge and the wall for chair pull-out. Add another 90 cm behind that for a comfortable walkway. Total 180 cm minimum per side.
Is a round or rectangular table better for small rooms?
Round tables are more space-efficient in square rooms because they have no corners. A round table for 6 needs ~120 cm diameter and a minimum room size of ~330 cm in both directions.
How many people can sit at a 180 cm table?
A 180 cm rectangular table seats 6 comfortably (3 on each long side). Add 2 end seats for 8 people at a squeeze.
What is the minimum dining room size for 8 people?
For 8 people at a 210 × 90 cm table, the minimum room size is approximately 390 × 450 cm including all clearances.