Paper size · ISO A

A5 paper size

A5 Paper Size: 148 × 210 mm, with inch and cm dimensions. Check proportions and common uses. Find the largest square for a paper craft.

148 × 210 mm5.8268 × 8.2677 inRatio 74:105 (1:1.419)
Millimetres
148 × 210 mm
Centimetres
14.8 × 21 cm
Inches · rounded to 4 decimals
5.8268 × 8.2677 in
Aspect ratio · width:height
74:105 (1:1.419)
This sizeA4
A5 and A4, at the same scale. Sheets shown with the short edge across.

Common uses

A5 is a handy notebook, journal and small booklet size. An A4 cover folded across its long edge makes an A5 cover.

How it compares

Two A5 sheets placed side by side make approximately one A4 sheet. Cut A5 across the middle of its long edge to get two A6 sheets. Whole-millimetre rounding can leave a 1 mm difference at a cut edge.

From sheet to fold

Cut a square for origami

The largest square from a flat rectangle this size is 148 × 148 mm (5.8268 × 5.8268 in). Fold one short edge against a long edge so their corners meet. Crease the diagonal, cut off the extra 62 mm strip, then open the triangle.

Try the beginner origami dog with your square, or see how to prepare square paper.

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