You found the perfect graphic print. You love the colors, the vibe, and the bold lines. But now you’re staring at a drop-down menu asking: 12x18, 20x30, or 24x36?

Choosing the right size art is less about math and more about balance. A poster that is too small can look lost on a large wall, while one that is too large can feel cluttered.

At Posters by Humans, we believe art should transform a space, not just fill it. Here is our simple guide to choosing the right size for your sanctuary.

1. The "Above the Sofa" Rule

This is the most common place for art, and the most common place for mistakes. The golden rule of interior design is that your art (or collection of art) should take up two-thirds of the width of the furniture it hangs above.

• The Mistake: Hanging a single small 12x18 print above a large 3-seater sofa. It floats in the empty space.

• The Fix: Go big. A 24x36 statement piece works beautifully here. Alternatively, hang two 20x30 prints side-by-side with 3 inches of space between them.
  
  

2. The Statement Piece (24x36)

If you have a narrow wall (like the end of a hallway) or a specific focal point (above a fireplace or a desk), the 24x36 is the king of posters.

Because our graphic prints use bold lines and deep colors, a large size commands attention. It sets the mood for the entire room instantly.

• Best for: Living rooms, dining areas, and above the master bed.
  
  
  

3. The Versatile Anchor (20x30)

This is our "Goldilocks" size. It is large enough to stand alone in smaller spaces (like a bathroom or home office) but small enough to be part of a pair.

• Best for: Home offices, entryways, or hung in a row of three down a long hallway.
  
  
  

4. The Detail Piece (12x18)

Don't underestimate the smaller print. The 12x18 is perfect for "leaning" decor. Try leaning one on a bookshelf, a mantle, or a bedside table rather than hanging it. It adds a layer of casual sophistication to the room.

• Best for: Shelves, gallery walls, and small nooks.
  
  
  

Summary Table

• 12x18 inches: Great for shelves, desks, and gallery wall additions.

• 20x30 inches: The standard medium. Perfect for hallways and home offices.

• 24x36 inches: The showstopper. Best for above the couch or bed.
  
  
  

Ready to find your match?

All our prints are created on museum-grade matte paper to ensure that whatever size you choose, the quality remains sharp, vibrant, and timeless.