What problem this solves
Gallery walls look easy on Pinterest and brutal in real life. The most common failure mode is frames that look crooked because they weren’t centred on the nails, or a layout that crowds one side and starves the other, or a “salon” arrangement that ends up looking like an accident because the eye groups irregular shapes into patterns that don’t exist. The fix is to plan the layout mathematically before you put hammer to wall: nail coordinates, spacing, centre-line alignment, and an offset from the ceiling that’s consistent for the whole arrangement.
This calculator outputs the coordinates as numbers a real person can transcribe onto the wall. For most layouts, the workflow is: measure two perpendicular reference lines from a corner, mark the offset down from the ceiling (15–20 cm is typical), then mark each nail position. Use painter’s tape for the nail marks so you can adjust without filling holes.
Who it’s for
- Designers preparing a hanger sheet for an installer
- DIY renovators hanging a family photo wall
- Stairwell designers working out a diagonal layout that follows the slope
- Gallery owners planning an exhibition layout before the art arrives
Why layout matters more than frame choice
Designers obsess over frame style and mat colour and overlook layout, which is what the eye reads first. A grid of mismatched frames reads as composed; a salon of expensive frames reads as scattered. The eye groups irregular layouts using Gestalt principles (proximity, similarity, closure) that the calculator respects by maintaining consistent spacing and centring the spread on the wall.
Limitations
- Frame sizes are averages — mixed-size salons need per-frame dimensions; use individual frame sizes.
- Diagonal layout assumes the wall is rectangular — stairwell rake not modelled.
- No picture-light allowance — if adding picture lights, allow 15 cm clearance above each frame.
- Center-of-frame coordinates — for D-rings offset from the top, add 2–4 cm down depending on hardware.
- Wall origin is top-left for the calculator; verify your reference measurement matches.
Practical hanging tips
Aim for the centre of the entire arrangement to sit at eye level (≈ 145 cm from the floor for standing, ≈ 130 cm for a seated living room). Mark this centre on the wall first, then work outward. For salon arrangements, start with the largest frame off-centre and build around it. For grids, use a level to draw two perpendicular reference lines; the corners of every frame should align to those lines within 2 mm. Always pre-drill with a small bit if you’re going into plaster.