Dining Room Table Size Calculator

This handy dining room table size calculator easily measures the optimal table dimensions based on room measurements and seating requirements.

For a dining space of 14′ x 16′, the calculator analyzes:

• Minimum clearance of 36 inches for chair movement
• 24 inches of table space per person
• Additional 18-24 inches for walkways

Result: Recommends a 42″ x 84″ rectangular table accommodating 8 people comfortably.

Small Square Room (10′ x 10′)

• Room Area: 100 sq ft
• Clearance: 36″ on all sides
• Maximum table size: 48″ x 48″ square table
• Seating capacity: 4-6 people

Medium Rectangle Room (12′ x 15′)

• Room Area: 180 sq ft
• Clearance: 42″ on all sides
• Maximum table size: 42″ x 72″ rectangular table
• Seating capacity: 6-8 people

Large Square Room (15′ x 15′)

• Room Area: 225 sq ft
• Clearance: 48″ on all sides
• Maximum table size: 60″ diameter round table
• Seating capacity: 8-10 people

Open Plan Space (20′ x 25′)

• Room Area: 500 sq ft
• Clearance: 60″ on all sides
• Maximum table size: 48″ x 96″ rectangular table
• Seating capacity: 10-12 people

Compact Dining Area (8′ x 10′)

• Room Area: 80 sq ft
• Clearance: 30″ on all sides
• Maximum table size: 36″ x 60″ rectangular table
• Seating capacity: 4-6 people

Dining Room Table Size Chart

Table Shape	Table Dimensions (inches)	Seating Capacity
Rectangular	48″ x 36″	4
	60″ x 36″	6
	72″ x 36″	6-8
	96″ x 36″	8-10
	120″ x 36″-48″	10-12
Square	36″ x 36″	4
	48″ x 48″	4-6
	60″ x 60″	8
Round	36″ diameter	2-4
	48″ diameter	4-6
	60″ diameter	6-8
	72″ diameter	8-10
Oval	72″ x 42″	6-8
	84″ x 42″	8-10
	96″ x 48″	10-12

Dining Room Table Size Calculation Formula

The formula follows:

Room Width - (2 × Clearance) = Maximum Table Width

Room Length - (2 × Clearance) = Maximum Table Length

Room size: 14' × 16'
Required clearance: 36" (3')
Table Width: 14' - (2 × 3') = 8' maximum width
Table Length: 16' - (2 × 3') = 10' maximum length

How to Calculate Dining Room Table Size Accurately?

Follow these steps:

• Measure room dimensions precisely.
• Subtract required clearances (36″ minimum).
• Account for additional furniture.
• Consider the impact of table shape.

Room: 13' × 14'
Clearance: 36" all around
Additional furniture: 24" deep buffet
Available space: 8' × 9'
Recommended size: 42" × 72" rectangular table

How big of a table can I fit in a 12×12 room?

In a 12′ × 12′ room (144 sq ft):

• Standard clearance: 36″ on all sides
• Available space: 6′ × 6′
• Optimal table size: 48″ × 48″ square or 54″ round
• Comfortable seating: 6-8 people
• Additional consideration: Allow extra space near doorways.

What size dining table for an 8×10 room?

For an 8′ × 10′ room (80 sq ft):

• Minimum clearance: 30″ on all sides
• Available space: 4′ × 6′
• Optimal table size: 36″ × 60″ rectangular
• Comfortable seating: 4-6 people
• Consider drop-leaf or expandable options for flexibility.