Gallery Wall Spacing Calculator
Lay out an even grid of frames with exact margins and per-frame coordinates, so you can mark the wall once and drill with confidence.
Layout & frame positions
| Frame | From left | From top of grid |
|---|---|---|
| Row 1, Col 1 | 9 in | 2.5 in |
| Row 1, Col 2 | 24 in | 2.5 in |
| Row 1, Col 3 | 39 in | 2.5 in |
| Row 2, Col 1 | 9 in | 21.5 in |
| Row 2, Col 2 | 24 in | 21.5 in |
| Row 2, Col 3 | 39 in | 21.5 in |
Centering a grid, step by step
A grid gallery wall is really just arithmetic: multiply your column count by the frame width, add the gaps between columns, and that's the grid's total width (the same logic applies to height and rows). Subtract that from the wall's width and height, split the leftover space evenly on both sides, and you have the margin to measure in from each edge before you place the first frame.
From there, every frame's position is just the margin plus however many frame-and-gap widths (or heights) come before it. Working from the top-left frame outward keeps the math simple and matches how most people naturally mark a wall.
Frequently Asked Questions
What gap should I leave between frames?
Two to four inches is the most common range for a cohesive, gallery-style grid — tight enough to read as one composition, loose enough that each frame stays visually distinct. The calculator defaults to 3 inches, but you can enter any gap you prefer.
How do I know if my grid will actually fit?
The calculator adds up the total width and height of your frame grid (frame sizes plus the gaps between them) and checks it against your wall dimensions. If the grid is too big, it tells you so directly, rather than returning a layout that would run off the wall.
Why does it give coordinates instead of just a picture?
Exact left/top measurements for every frame let you mark the wall with a pencil and tape measure (or a paper template) and drill once, correctly, rather than eyeballing a layout and patching extra nail holes afterward.
This tool assumes same-size frames — what about a mixed "salon" layout?
A uniform grid is the easiest layout to plan precisely and the one this calculator solves for. A salon-style mix of different frame sizes is more of a design exercise than an arithmetic one — lay the frames out on the floor first, photograph the arrangement, and use that photo as your template on the wall.
Educational planning aid only. Double-check every measurement against your actual wall and frames before drilling, and account for any outlets, switches, or trim the grid would overlap.