5 × 8 index card size
5 × 8 Index Cards: 127 × 203.2 mm, with inch and cm dimensions. Check proportions and common uses. Find the largest square for a paper craft.
- Millimetres
- 127 × 203.2 mm
- Centimetres
- 12.7 × 20.32 cm
- Inches · rounded to 4 decimals
- 5 × 8 in
- Aspect ratio · width:height
- 5:8 (1:1.6)
Common uses
Index cards work for flashcards, revision notes, recipe files and small sketches. A larger card gives more writing room; choose the size that fits your box or binder.
How it compares
Invitation is smaller in area. A9 greeting card 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 127 × 127 mm (5 × 5 in). Fold one short edge against a long edge so their corners meet. Crease the diagonal, cut off the extra 76.2 mm strip, then open the triangle.
For origami, use thin uncoated paper with these dimensions instead of thick or coated stock. Try the beginner origami dog with your square, or see how to prepare square paper.