Traditional British Book Sizes


Traditional British Book Sizes
British printing paper sizes and their nomenclature have varied over time. Not all authorities agree on every particular, but the table below represents a consensus view of the names and sizes most commonly cited in the post hand-press period.
 
  Sheet Folio 4to 8vo 12mo 16mo
Pott 16½ x 12½ 12½ x 8¼ 8¼ x 6¼ 6¼ x 4 5½ x 3 4 x 3
Foolscap 17 x 13½ 13½ x 8½ 8½ x 6¾ 6¾ x 4¼ 5 x 3 4¼  x 3
Crown 20 x 15 15 x 10 10 x  7½ x 5 6 x 3¾ 5 x 3¾
Post 21 x 16 16 x 10½ 10½ x 8 8 x 5¼ 7 x 4 5¼ x 4
Demy 22½ x 17½ 17½ x 11¼ 11¼ x 8¾ 8¾ x 5 7½ x 4 5 x 4
Medium 23½ x 18½ 18½ x 11¾ 11¾ x 9¼ 9¼ x 5 7-5/6 x 4 5 x 4
Royal 25 x 20 20 x 12½ 12½ x 10 10 x 6¼ 8 x 5 6¼ x 5
Super Royal 27 x 20 20 x 13½ 13½ x 10 10 x 6¾ 9 x 5 6¾ x 5
Elephant 28 x 23 23 x 14 14 x 11½ 11½ x 7 9½ x 5¾ 7 x 5¾
Double Crown 30 x 20 20 x 15 15 x 10 10 x 7½ 10 x 5 7½ x 5
Imperial 30 x 22 22 x 15 15 x 11 11 x 7½ 10 x 5½ 7½ x 5½
Atlas 30 x 26 26 x 15 15 x 13 13 x 7½ 10 x 6½ 7½ x 6½