Two rules make a gallery wall look professionally hung. First, the 2/3 to 3/4 rule: the whole art group should be about two-thirds to three-quarters as wide as the furniture below it (or the wall itself if there is no furniture). Second, the 57-inch rule: the centre of the arrangement
should sit about 57 inches from the floor, which is average eye level. Enter your measurements below and this planner works out the ideal size, spacing and exact nail positions for your wall. It works for a single large piece, a neat grid, or a mixed gallery. It also works above a sofa, in a hallway, or on a blank living room wall. You do not need to guess or drill test holes. You get clear numbers first, then you hang with confidence.
Gallery Wall Planner
All measurements are in inches. Centimetre equivalents are shown in parentheses (1 in = 2.54 cm).
Reference width:
Ideal art-group width (2/3 to 3/4):
Gallery total size:
Left margin:
Fit verdict:
Nail positions
| Frame # | Size (in) | Centre-X from left (in + cm) | Nail height from floor (in) | Distance from top of gallery (in) |
|---|
Note: for wire or sawtooth hangers, measure the hook-to-top distance of your frame and shift the nail up by that amount.
How to use
- Measure your wall width and the width of the furniture below the art (if any).
- Enter your numbers above, choose a layout, and adjust frame size and gap.
- Mark the nail positions with painter’s tape first and step back to check the arrangement.
- Hang your frames at the marked nail positions.
How it works
The planner takes your wall and furniture widths, works out the ideal art-group width as two-thirds to three-quarters of the reference width, sizes the gallery for your chosen layout, centres it on the wall, and places the centre of the arrangement at your chosen centre height. It then lists the centre-X and nail height for every frame and draws a scaled diagram so you can see the result before you drill.
Gallery wall sizing and placement rules
Start with the furniture. Above a sofa, the art group should span two-thirds to three-quarters of the sofa width. For an 84 inch sofa, that is 56 to 63 inches wide. Leave 6 to 10 inches between the bottom of the frames and the top of the sofa back. Keep the centre of the group near 57 inches from the floor.
On a blank wall with no furniture, use the wall width instead. The group should still cover about two-thirds of the wall. Keep the gaps between frames even, at 2 to 3 inches for most rooms. Big frames can take a 4 inch gap. Step back and view the group from across the room before you drill.
Tips for a better gallery wall
- Lay the frames out on the floor first and settle the arrangement before you hang anything.
- Keep frame colors the same or close for a calm, unified look.
- Use art with a shared color or theme so the group feels connected.
- Hang the largest frame first, then build the group around it.
- Use two nails or hooks for wide frames so they stay level.
- Step back and check the group from the doorway before you finish.
Common gallery wall mistakes
- Hanging the group too high, so it floats above the furniture.
- Choosing art that is too small for the wall.
- Using gaps that are uneven from frame to frame.
- Hanging the group off centre above the sofa.
- Drilling holes before checking the layout with tape.
Frequently asked questions
What if there is no furniture below the art?
Set the furniture width to 0. The planner then uses the wall width as the reference, so the ideal art-group width is two-thirds to three-quarters of the wall.
What spacing should I leave between frames?
A gap of 2 to 4 inches between frames usually looks best. Use a smaller gap for a tight, cohesive group and a larger gap for a more relaxed look.
What height should I use for high ceilings?
The 57-inch centre-height rule works well for standard rooms. With high ceilings, you can raise the centre a little (up to about 60 inches) so the art still relates to the furniture below it, rather than floating in the middle of a tall wall.
Can I mix frame sizes?
Yes — choose the Gallery mixed layout, which uses two large 24 x 30 inch frames and four small 12 x 16 inch frames. For a fully custom mix, plan each row separately with the single-row layouts.
How do I hang a gallery wall up a staircase?
Follow the slope of the stairs. Keep the centre line of the group about 57 inches above each step as it rises. Mark the sloped line with painter’s tape before you drill. Hang the frames one at a time, starting at the bottom of the stairs.
What if my frames are heavy?
Use picture hooks or wall anchors rated for the weight of each frame. Hang heavy frames on two hooks so the weight is shared and the frame stays level. Check the weight rating on the packet before you buy.
Can I plan a gallery wall for a hallway?
Yes. Set the furniture width to 0 and enter the hallway wall width. The planner sizes the group to the wall and gives you the same nail positions. A single row layout works best in a narrow hall.
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