Poster size guide
Every Imaginoz poster size in centimetres and inches, how big it looks on a wall, and which size works for which spot. Posters are printed on thick 300–350 GSM paper and ship without frames.
Sizes at a glance
| Size | Centimetres | Inches | Best for | From |
|---|---|---|---|---|
| A5 Mini posters in 4×4 grids | 14.8 × 21 | 5.8 × 8.3 | Collages, desk, small gaps between furniture | ₹49 |
| A4 The most popular size | 21 × 29.7 | 8.3 × 11.7 | Study wall, 3×3 grids, ladder layouts | ₹39 |
| A3 Twice the area of A4 | 29.7 × 42 | 11.7 × 16.5 | Above the bed, sofa, a single statement poster | ₹149 |
| 12 × 18 in Selected designs | 30.5 × 45.7 | 12 × 18 | Hero poster in the middle of a collage | — |
Side by side, to scale:
Which size for which wall?
- Small wall / beside a door: 3–4 × A4 stacked vertically.
- Above a single bed or study table (about 1 m wide): 3 × A3 in a row, or a 3×3 grid of A4.
- Above a double bed or sofa (1.5 m+): a salon mix of A3 + A4 + A5, or a 4×4 A5 collage with an A3 hero in the middle.
- Full feature wall: 24–40 posters in A5 / A4 — follow a layout from the wall setup guide.
- Desk or shelf: lean 2 × A4 + 1 × A5 and add a 3D-printed name plate.
How to stick posters without damaging the wall
- Clean the wall with a dry cloth — dust stops tape from holding.
- Use removable mounting tape or poster putty, never cello-tape or glue on paint.
- Corners first: one small piece on each corner (add one in the middle of the long edges for A3).
- Press for 30 seconds and keep posters away from damp walls and direct afternoon sun.
- Keep it straight with a spirit level or your phone's level app; start from the centre poster.
- Removing: peel the tape slowly, parallel to the wall — it comes off clean.
Poster size FAQs
What is the size of an A4 poster?
An A4 poster is 21 × 29.7 cm (8.3 × 11.7 inches) — the size of a normal printer sheet.
Is A3 bigger than A4?
Yes. A3 is 29.7 × 42 cm, exactly double the area of A4 (two A4 sheets side by side).
Which poster size is best for a bedroom wall?
For one poster above the bed choose A3; for a full wall choose a 3×3 grid of A4 or a 4×4 collage of A5.
How many posters do I need for a wall?
A 3×3 A4 grid covers about 0.75 × 1 m; a 4×4 A5 collage about 0.65 × 0.9 m. Our wall setup guide lists the count for 8 layouts.
How do I stick posters without damaging the paint?
Use removable double-sided mounting tape or poster putty on the corners, press for 30 seconds, and peel slowly when removing. Avoid cello-tape and glue on painted walls.