How to Choose the Right Poster Size for Your Space

A stunning poster can completely transform a room — but get the size wrong, and it can look awkward instead of amazing. Whether you’re shopping for a bold statement piece or a subtle accent, knowing how to choose the right poster size is key to creating a balanced, stylish space.

Here’s our dreamposter.co.uk guide to picking the perfect poster dimensions for your home.

1. Measure Your Space First

Before you fall in love with a design, grab a tape measure.

  • Wall width: A poster should fill around two-thirds to three-quarters of the wall space above a piece of furniture.
  • Height clearance: Leave at least 15–20cm above furniture for breathing room.
  • Group or solo?: Decide if your poster will stand alone or be part of a gallery wall — that will change the ideal size.

💡 Pro tip: Mark the outline of the poster size with painter’s tape to visualise it in your space.

2. Match the Poster Size to the Room’s Purpose

  • Living room feature wall: Go for A1 or larger for maximum impact.
  • Bedroom or reading nook: A calming A2 print works beautifully without overpowering.
  • Hallways or small spaces: A3 or smaller sizes fit well without crowding.

3. Think in Proportions, Not Just Dimensions

The shape of your poster matters too:

  • Portrait: Great for narrow walls or above small furniture.
  • Landscape: Perfect above sofas, beds, or dining tables.
  • Square: Works well in pairs or grids for a modern feel.

4. Going Big? Balance with Décor

If you choose a large format print, keep surrounding décor minimal to let your poster shine. For smaller prints, consider using multiple in a gallery wall for a dynamic look.

5. Standard UK Poster Sizes to Know

  • A3 – 29.7 × 42 cm
  • A2 – 42 × 59.4 cm
  • A1 – 59.4 × 84.1 cm
  • A0 – 84.1 × 118.9 cm (statement-making!)

Final Word

Choosing the right poster size is as important as picking the design itself. The right dimensions will enhance your space, balance your furniture, and turn a simple print into a show stopping feature.

Browse our poster collection today and find your perfect size match — whether you’re after a cosy A3 for your desk or an oversized A0 for your feature wall.

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