A5 paper size (148mm x 210mm)
Standard paper size used for notebooks, booklets, and documents. The dimensions are 148mm by 210mm.
This notebook is A5 size, convenient for carrying around.
Please print on A5 paper.
Standard notation for A5 paper size.
Kanji numeral variant; less common than the Arabic numeral form.
From the ISO 216 A-series paper size standard, where 'A5' indicates the size, and 判 (はん) meaning 'size' or 'format'.