A Paper Sizes

ISO216 standard defines A size paper dimensions, common in Europe for centuries. A3, A4, A5, and A6 are popular for printing. Each size is half the previous one when cut. Larger sheets fold to create smaller brochures, like A3 for A4 brochures.

Format	Width × Height (mm)	Width × Height (in)
A0	841 × 1189	33.1 × 46.8
A1	594 × 841	23.4 × 33.1
A2	420 × 594	16.5 × 23.4
A3	297 × 420	11.7 × 16.5
A4	210 × 297	8.3 × 11.7
A5	148 × 210	5.8 × 8.3
A6	105 × 148	4.1 × 5.8
A7	74 × 105	2.9 × 4.1