18 × 24 poster size
18 × 24 Poster: 457.2 × 609.6 mm, with inch and cm dimensions. Check proportions and common uses. Find the largest square for a paper craft.
- Millimetres
- 457.2 × 609.6 mm
- Centimetres
- 45.72 × 60.96 cm
- Inches · rounded to 4 decimals
- 18 × 24 in
- Aspect ratio · width:height
- 3:4 (1:1.333)
Common uses
Use this format for event posters, art prints and wall displays. Match the frame to the finished trim size, and ask the printer how much bleed to add to the artwork.
How it compares
Poster 12x18 is smaller in area. Foam board 20x30 is larger in area. These formats have their own proportions; halving a sheet does not necessarily produce the next size.
Cut a square for origami
The largest square from a flat rectangle this size is 457.2 × 457.2 mm (18 × 18 in). Fold one short edge against a long edge so their corners meet. Crease the diagonal, cut off the extra 152.4 mm strip, then open the triangle.
Try the beginner origami dog with your square, or see how to prepare square paper.