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Crown Octavo

5.4 x 8 inch
/
137.2 x 203.2 mm

With dimensions of approximately 5.4" x 8" (136mm x 203mm), the Crown Octavo format has a compact surface area around 43 square inches or 276 square cm. Sometimes referred to as Crowntime, this handy book size became immensely popular for paperback novels and mass market printing. The portable 5.4" x 8" size allowed books to be lightweight and easily carried, while having enough text per page for comfortable reading. Especially ubiquitous for paperback fiction in North America, Crown Octavo helped standardize the dimensions of mass market books. Its origins trace back to early bookbinding when eight leaves of paper were folded into one signature. The versatile Crown Octavo size can hold around 275-350 pages printed on both sides. Extremely common today for paperback bestsellers, genre fiction, and casual nonfiction, the success of Crown Octavo stems from its optimal balance of compact portability and smooth readability that shaped modern book publishing.

All Book Page Sizes

Quarto
in
8.5 x 11
Octavo
in
6 x 9
Duodecimo
in
5 x 7.5
Sextodecimo
in
4.5 x 6.8
32mo
in
4 x 6
24mo
in
5 x 8
16mo
in
6.5 x 9.5
12mo
in
7.5 x 9.5
18mo
in
6.8 x 9.5
Imperial Octavo
in
6.8 x 10
Royal Octavo
in
7.5 x 10
Demy
in
8.5 x 11
Medium Octavo
in
7 x 10
Super Royal
in
9 x 12
Elephant Folio
in
14 x 20
Thumb Bible
in
1.5 x 2.5
Folio
in
12 x 19
A Format
mm
110 x 178
B Format
mm
129 x 198
C Format
mm
135 x 216
48mo
in
2.5 x 4
64mo
in
2 x 3
Crown Octavo
in
5.4 x 8
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