Wall art size is decided by the furniture beneath it, not by the wall. Art above a sofa, bed, console or fireplace should span two thirds to three quarters of that piece's width, and art on an open wall should fill 60 to 75 percent of the wall's width. When you are between two sizes, take the larger one.
Scale is the most common wall art mistake, ahead of style and color. A canvas too small for its wall reads as an afterthought whatever the picture, and one too large can crowd a small room. The rules below give a number for every wall in the house, in inches, before you buy.
The two thirds rule for art above furniture
Above a sofa, console, bed or fireplace, the artwork, or the full width of a multi-panel set, spans roughly two thirds to three quarters of the furniture's width. Narrower than that and the piece looks lost; wider than the furniture and it looks mismatched rather than deliberate. For a standard 84 inch sofa that puts the art between 56 and 63 inches wide, which is why so many living room sets run at that width once assembled. Our sofa sizing guide works the arithmetic for every common sofa length, and the above the bed guide does the same for queen and king beds.

Common canvas sizes and what each one is for
| Size band |
Inches |
Where it works |
| Small |
8 by 10 to 16 by 20 |
A shelf, a hallway, one piece in a gallery wall. Too small to anchor a large wall alone |
| Medium |
18 by 24 to 24 by 36 |
A single accent piece, a bedroom wall, an office. Reads from across the room without dominating it |
| Large |
30 by 40 to 40 by 60 |
Anchors a living room or a large blank wall on its own, or anchors a gallery wall |
| Oversized |
48 and up, or a multi-panel set |
A statement wall: an open living room, a stairwell, a high-ceilinged wall that would swallow anything smaller |
Our range runs from a single 24 by 16 inch canvas to a five-panel set 82 inches wide, so every band in the table is available. Large wall art gathers the large and oversized singles, and panoramic wall art holds the long, low pieces that suit a wide wall with a low ceiling.

Measure the wall as well as the furniture
Furniture-width sizing works for art hung above a specific piece. For an open wall with nothing beneath it, measure the wall itself and aim to fill 60 to 75 percent of its width with a single piece. To test a multi-piece layout before you commit, cut paper templates to size and tape them up for a day; the method is in our gallery wall guide. A stairwell follows its own rule, because the wall rakes with the stairs; the staircase guide covers it.

Sizing a multi-panel canvas set
A multi-panel set is sized by its total width once hung, including the gaps between panels, never by one panel. The listed size of a 3 piece set or a 5 piece set already includes those half inch gaps, so compare that number against the two thirds figure for your sofa or bed. A 3 Horizontal set at 49 by 32 inches suits a 72 inch sofa; a 5 Star at 62 by 32 suits an 84 to 96 inch one. For spacing and leveling once the size is chosen, the hanging guide carries a printed template for every layout.

When in doubt, size up
Undersized wall art is far more common than oversized. A slightly large piece reads as a deliberate choice; a slightly small one almost always reads as an accident. If two sizes both seem possible, order the larger. The exception is a wall with a low ceiling, where the height matters more than the width: keep the top edge of the canvas at least 8 inches below the ceiling line.
What to browse
Once the size is fixed, choosing the picture is easier, because everything that will not fit is already ruled out. Browse by wall: living room wall art for the sofa wall, large wall art for an open wall, and every room or every subject from the hub pages.
Quick answers
Common Questions
What size wall art should I buy for above my sofa?
Two thirds to three quarters of the sofa's width. For a standard 84 inch sofa that is 56 to 63 inches of art, either one large canvas or the full width of a multi-panel set. Hang it so the bottom edge sits 6 to 10 inches above the sofa back, and center it on the sofa rather than on the wall.
Is it better to size wall art too big or too small?
Too big. A slightly oversized piece reads as a deliberate design choice, while an undersized one reads as an afterthought and makes the wall look emptier than it was. When two sizes both seem possible, order the larger, unless the ceiling is low, in which case keep the top edge at least 8 inches below it.
How do I size a multi-panel canvas set correctly?
Use the set's listed total width, which already includes the half inch gaps between panels, and compare it to the two thirds figure for the furniture beneath. A 49 inch wide three-panel set suits a 72 inch sofa; a 62 inch five-panel set suits an 84 to 96 inch sofa. Never size by a single panel.
What size art goes on an open wall?
Fill 60 to 75 percent of the wall's width. A 96 inch wall takes art 58 to 72 inches wide, which is a large single canvas or a three- to five-panel set. Hang it with its center 57 to 60 inches from the floor, the height most galleries use, unless furniture beneath it moves the reference point up.
How big should a canvas be in a small room?
Larger than instinct suggests. One medium to large canvas, 24 by 36 or 36 by 24 inches, on the main wall of a small room reads as calm and finished; several small pieces make the same room feel busier. Keep it inside the two thirds rule for the furniture beneath and leave the other walls bare.