Free tool

Dining table size calculator

Enter your dining room. You get the largest rectangular and round table that leaves room to pull out the chairs, and how many people each one seats.

96 × 42 inches, at most

The longest rectangular table that leaves the clearance on every side. It seats 10.

  • Space left for the table96 × 72 inches
  • Largest round table72 inches across, seats 8
  • Table height28 to 30 inches

See it in your dining room

Numbers say it fits. A picture says whether it suits the room. Photograph the space, add the table from any store, and see it in place.

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The rules behind the numbers

  • Clearance: 36 inches between the table edge and the walls or other furniture [1][2][3]. Chairs with arms need 42 inches; 24 inches works only where chairs tuck under the table [2].
  • Seats: 24 inches of table edge per person [1][2][3]. A table at least 36 inches wide also seats one at each end, which matches the seating chart in [2].
  • Width: 36 to 42 inches is common for a rectangular table [1]. The calculator uses 42 when there's room.
  • Round tables: 35 to 42 inches across seats 4, 44 to 52 seats 6, 54 to 72 seats 8, and 66 to 84 seats 10 [2].
  • Height: 28 to 30 inches for a standard table, 36 for counter height and 42 for bar height [1].

Hanging a light over it? The chandelier size calculator sizes that, and the rug size calculator sizes the rug underneath.

Sources

  1. Key dining table measurements, Castlery. Read October 31, 2026.
  2. Dining table size guide, Pop Maison. Read October 31, 2026.
  3. What size dining table do I need?, The Furniture Mall. Read October 31, 2026.

Questions

What size dining table fits my room?

Take 36 inches of clearance off every side: the room's length and width in inches, minus 72. A 14 by 12 foot room leaves 96 by 72 inches, enough for a 96 by 42 inch table.

How much space do you need around a dining table?

36 inches from the table edge to the wall or other furniture, so chairs pull out and people can walk behind them. Allow 42 inches for chairs with arms. 24 inches works only where chairs tuck under.

How many people fit at my table?

Give each person 24 inches of table edge. A 72 inch table seats three on each side plus one at each end: eight.

What size round table seats 6?

About 44 to 52 inches across. 35 to 42 inches seats 4, 54 to 72 seats 8, and 66 to 84 seats 10.

How wide should a dining table be?

36 to 42 inches is common for a rectangular table: room for place settings on both sides and serving dishes in the middle.

Will it look right in my room?

The numbers say it fits. To see the wood, the shape and the chairs together, take a photo of the room and add the table from any store: Renderior shows it in place, with a link to buy it.

See the table in your dining room before you buy it.

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