Sectional sofa dimensions
L-shape sectionals 108-144 inches per side; U-shape 96+ inches. Room sizing rules included.
Sectionals dominate seating in family rooms and great rooms. Two main configurations — L and U — plus chaise variants.
In this guide
- 1
L-shape sectional
Long side: 96-144 inches. Common: 108-120. Short side (return): 60-96 inches. Common: 72. Depth (both arms): 36-44 inches. Height: 32-38. Fits in: living rooms 16×14 feet or larger.
- 2
U-shape sectional
Center span: 96-144 inches. Each return: 60-84 inches. Depth (all sides): 36-40 inches. Fits in: great rooms 16×18 feet or larger.
- 3
Sofa with chaise
Sofa side: 72-96 inches. Chaise extension: 60-72 long × 36-40 deep. Fits in: living rooms 14×14 feet or larger.
- 4
Clearances
Walkway around the open side of the L or U: 36 inches. Behind the sectional (free-standing): 12-18 inches. Coffee table to longest side: 14-18 inches.
Frequently asked questions
What's the standard size of an L-shape sectional?
Long side 96-144 inches; short side 60-96 inches; depth 36-44. 108 long × 72 short × 36 deep is a common standard.
What size room do I need for a sectional?
L-shape: 16×14 feet minimum. U-shape: 16×18 feet minimum.
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