A5 = 14.85 x 21 cm. (booklet)

A4 = 21 x 29.7 cm.  (document)

A3 = 29.7 x 42 cm.

A2 =  38 x 56 cm.

A1 = 56 x 76 cm. (ป้ายยินดีต้อนรับ)

A0 = 79x109 cm.