Paper size · US loose
US Letter paper size
US Letter Paper: 215.9 × 279.4 mm, with inch and cm dimensions. Check proportions and common uses. Find the largest square for a paper craft.
215.9 × 279.4 mm8.5 × 11 inRatio 17:22 (1:1.294)
- Millimetres
- 215.9 × 279.4 mm
- Centimetres
- 21.59 × 27.94 cm
- Inches · rounded to 4 decimals
- 8.5 × 11 in
- Aspect ratio · width:height
- 17:22 (1:1.294)
Common uses
Letter is a common office and school sheet in the US and Canada. Thin copy paper works for practice folds and the classic paper airplane.
How it compares
Two Half Letter sheets make one Letter sheet. Two Letter sheets make a Tabloid sheet. Compare Letter with A4 →
Cut a square for origami
The largest square from a flat rectangle this size is 215.9 × 215.9 mm (8.5 × 8.5 in). Fold one short edge against a long edge so their corners meet. Crease the diagonal, cut off the extra 63.5 mm strip, then open the triangle.
Try the beginner origami dog with your square, or see how to prepare square paper.