Imperial Octavo Book Size
Octavo(8vo / 8º / In-8) is a technical term describing the format of a book, which refers to the size of leaves produced from folding a full sheet of paper on which multiple pages of text were printed to form the individual sections (or gatherings) of a book.
According to imperial octavo book format, the width of the book is 21cm (81⁄4 inches) and the height is 29cm (111⁄2 inches), as shown in the picture on the right.
| Format/name | Imperial Octavo |
|---|---|
| Width | 21cm (9 1/2 inches) |
| Height | 29cm (111⁄ 2 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, Imperial Octavo book size is about 2.5 times the width and 5.4 times the height of the credit card.
21cm
29cm
29cm
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 1⁄ 2× 12 | 24 × 30 | 240 × 300 |
| Imperial octavo(8º/ 8vo) | 8 | 16 | 8 1⁄ 4× 11 1⁄ 2 | 21 × 29 | 210 × 290 |
| Super octavo(8º/ 8vo) | 7 × 11 | 18 × 28 | 180 × 280 | ||
| Royal octavo(8º/ 8vo) | 6 1⁄ 2× 10 | 17 × 25 | 170 × 250 | ||
| Medium octavo(8º/ 8vo) | 6 1⁄ 2× 9 1⁄ 4 | 17 × 23 | 170 × 230 | ||
| octavo(8º/ 8vo) | 6 × 9 | 15 × 23 | 150 × 230 | ||
| Crown octavo(8º/ 8vo) | 5 3⁄ 8× 8 | 14 × 20 | 140 × 200 | ||
| duodecimo(12º/ 12mo / twelvemo) | 12 | 24 | 5 × 7 3⁄ 8 | 13 × 19 | 130 × 190 |
| sextodecimo(16º/ 16mo / sixteenmo) | 16 | 32 | 4 × 6 3⁄ 4 | 10 × 17 | 100 × 170 |
| octodecimo(18º/ 18mo / eighteenmo) | 18 | 36 | 4 × 6 1⁄ 2 | 10 × 17 | 100 × 170 |
| trigesimo-secundo(32º/ 32mo / thirty-twomo) | 32 | 64 | 3 1⁄ 2× 5 1⁄ 2 | 8.9 × 14 | 89 × 140 |
| quadragesimo-octavo(48º/ 48mo / forty-eightmo) | 48 | 96 | 2 1⁄ 2× 4 | 6.3 × 10 | 63 × 100 |
| sexagesimo-quarto(64º/ 64mo / sixty-fourmo) | 64 | 128 | 2 × 3 | 5.1 × 7.6 | 51 × 76 |
