Sextodecimo(16º/ 16mo / sixteenmo) Book Size

Sextodecimo(16º/ 16mo / sixteenmo) is a traditional inch-based paper size. Traditionally, a number of different sizes were defined for large sheets of paper, and paper sizes were defined by the sheet name and the number of times it had been folded. Under this size standard, the paper size formats are named Folio, Quarto, Sexto (sixmo), Octavo, Duodecimo (twelvemo) and Sextodecimo (sixteenmo).

According to Sextodecimo(16º/ 16mo / sixteenmo) book format, the width of the book is 10cm (4 inches) and the height is 17cm (6 34 inches), as shown in the picture on the right.

Format/name Sextodecimo(16º/ 16mo / sixteenmo)
Width 10cm (4 inches)
Height 17cm (6 34 inches)

Our commonly used credit card size is 85.6 mm x 53.98 mm (3.4 in x 2.1 in). Using the credit card size as a reference, Sextodecimo(16º/ 16mo / sixteenmo) book size is about 1.2 times the width and 3.1 times the height of the credit card.

10cm book width and height 17cm

United States(US) Book Sizes

Format/Name Leaves Pages Approximate cover size (width × height)
inch × inch cm × cm mm × mm
folio(2º/ fo) 2 4 12 × 19 30 × 48 300 × 480
quarto(4º/ 4to) 4 8 9 12× 12 24 × 30 240 × 300
Imperial octavo(8º/ 8vo) 8 16 8 14×  11 12 21 × 29 210 × 290
Super octavo(8º/ 8vo) 7 × 11 18 × 28 180 × 280
Royal octavo(8º/ 8vo) 6 12× 10 17 × 25 170 × 250
Medium octavo(8º/ 8vo) 6 12×  9 14 17 × 23 170 × 230
octavo(8º/ 8vo) 6 × 9 15 × 23 150 × 230
Crown octavo(8º/ 8vo) 5 38× 8 14 × 20 140 × 200
duodecimo(12º/ 12mo / twelvemo) 12 24 5 ×  7 38 13 × 19 130 × 190
sextodecimo(16º/ 16mo / sixteenmo) 16 32 4 ×  6 34 10 × 17 100 × 170
octodecimo(18º/ 18mo / eighteenmo) 18 36 4 ×  6 12 10 × 17 100 × 170
trigesimo-secundo(32º/ 32mo / thirty-twomo) 32 64 3 12×  5 12 8.9 × 14 89 × 140
quadragesimo-octavo(48º/ 48mo / forty-eightmo) 48 96 2 12× 4 6.3 × 10 63 × 100
sexagesimo-quarto(64º/ 64mo / sixty-fourmo) 64 128 2 × 3 5.1 × 7.6 51 × 76

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