A wall full of posters can look like a curated gallery or like a noticeboard that got out of hand. The difference rarely comes down to the images themselves; it comes down to method. A gallery wall deserves to be treated like a small project: measure, mock it up, then hang. Here is the process step by step, with real numbers.
Step 1: find the common thread
Before you count nails, decide what ties your posters together. Three approaches never fail:
- A theme: your whole rock world, only cars, or the one anime saga you can't stop rewatching.
- A palette: different subjects, but two or three colours that keep returning.
- A graphic style: all retro illustration, all night photography, all bold typography.
You can combine two of these threads, rarely all three. A rock wall mixing vinyl art, gig posters and electric guitars holds together through its subject, even when the colours wander.
Step 2: measure up and set the outer frame
Measure the usable width of the wall, or of the furniture you're hanging above. The whole arrangement should cover roughly two-thirds of that width. Picture it as one big invisible rectangle: its outline matters more than any individual poster.
When all your posters are the same size, the maths is refreshingly simple. Six posters in two rows of three with 5 cm gaps make a block 100 cm wide and 105 cm tall. Nine posters in three rows of three, still at 5 cm, come to 100 × 160 cm. Write those figures down: they'll tell you straight away whether the plan fits above the bed or needs an open wall. For more sizing benchmarks, see our poster size guide.
Step 3: mock it up on the floor, then on the wall
Lay the posters on the floor and shuffle them until the balance feels right. Photograph each version; on a phone screen, anything lopsided jumps out immediately.
Next, cut templates the size of your posters from brown paper or newspaper and fix them to the wall with masking tape. Label each one with the poster it stands for. Leave them up for a day or two. It's the best way to judge height, spacing and how the wall reads from the bed or the doorway.
Step 4: choose your alignment
The grid
Rows and columns, with identical gaps everywhere. It's the most graphic option, and sticking to one format makes it effortless because there are no mismatched sizes to juggle. Aim for 5 to 8 cm between posters and, above all, keep that gap consistent. Four, six or nine posters in a grid create a calm, very contemporary rhythm.
Salon style
Borrowed from the crowded exhibition walls of the past, salon style arranges images more freely. Mix portrait and landscape, stagger the heights, but keep the gaps between neighbouring edges regular (5 to 10 cm) and the overall outline roughly rectangular. Start with your strongest poster, placed slightly off-centre, and build outwards from it.
The horizon line
A middle ground: every poster sits on one shared horizontal line, running through their centres, their top edges or their bottom edges. On a picture ledge, align the bottoms. Above a headboard, align the tops.
Step 5: hang in the right order
- Start in the middle. Hang the centrepiece, or the middle column of a grid, first and work outwards.
- Use a level. A spirit level or the level app on your phone is plenty.
- Make a spacer. Cut a strip of card exactly as wide as your gap, say 5 cm, and slot it between posters for perfectly even spacing.
- Mark before you fix. Note the corners with a light pencil mark or small pieces of masking tape, then swap the templates for the real posters one at a time.
As for the fixing itself, our guide to hanging posters without damaging walls compares every hole-free option.
Mixing themes without the mess
You don't have to choose between anime, football and the 90s. A few rules keep a mixed wall readable:
- Repeat one colour at least three times, in different corners of the arrangement. The eye joins the dots by itself.
- Alternate busy and quiet images. A highly detailed poster needs a calmer neighbour, such as a quote or a plain background.
- Spread the visual weight. Dark, dense images feel heavy, so don't cluster them all on one side.
- Build little families. Two arcade posters side by side, two cassette prints further along: the wall reads as a collection rather than an accident.
If you want maximum impact without juggling separate designs, a wall set does it in one go. A 3×3 grid, for example, fills a large wall on its own with nine evenly spaced panels.
Your checklist
- A common thread chosen (theme, palette or style).
- Outer dimensions measured, around two-thirds of the wall or furniture.
- Paper templates tested on the wall for a day or two.
- One gap size, kept identical everywhere with a card spacer.
- Hung from the centre outwards, checked with a level.
The hardest part is starting. Once the first poster is up, the rest of the wall almost arranges itself.
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