British/US Imperial Paper Sizes

Folio meant cut in half, quarto cut in quarters, sixmo cut in sixths and octavo cut in eights. For example:

Imperial = 30" x 22"
Imperial folio = 15" x 22"
Imperial quarto = 15" x 11"
Imperial octavo = 7.5" x 11"
You can also have Double (twice the size), Quad (four times the size) or Double Quad (eight times the size).

Foolscap was so called because it used to have a watermark showing a fool's head and cap. The most common paper sizes in offices were Foolscap (this was Foolscap folio 13.5 x 8.5 in) and Quarto, which was shorter than Foolscap but slightly wider.

Cut Cards Sizes	Width x Height (Inches)	Width x Height (Millimeters)
Thirds	1½ x 3	38.1 x 76.2
Ex-Thirds	1¾ x 3	44.45 x 76.2
Towns	2 x 3	50.8 x 76.2
Small	2 ⅜ x 3⅝	60.325 x 92.075
Large	3 x 4½	76.2 x 114.3
Court	3½ x 4½	88.9 x 114.3
Double Small	3⅝ x 4¾	92.075 x 120.65
Postcard	3½ x 5½	88.9 x 139.7
Double Large	4½ x 6	114.3 x 152.4
Cabinet (Photo)	4¼ x 6½	107.95 x 165.1
Quad Small	4¾ x 7¼	120.65 x 184.15
Quad Large	6 x 9	152.4 x 228.6
Writing Papers Sizes
Pott	12½ x 15	317.5 x 381
Double Pott	15 x 25	381 x 365
Foolscap	13¼ x 16½	336.55 x 419.1
Double Foolscap	16½ x 26½	419.1 x 673.1
Foolscap and Third	13¼ x 22	419.1 x 558.8
Foolscap and Half	13¼ x 24¾	419.1 x 628.65
Pinched Post	14½ x 18½	368.3 x 469.9
Post	15¼ x 19	387.35 x 482.6
Double Post	19 x 30½	482.6 x 774.7
Large Post	16½ x 20¾	419.1 x 527.05
Double Large Post	20¾ x 33	527.05 x 838.2
Copy	16¼ x 20	412.75 x 508
Medium	18 x 22½	457.2 x 571.5
Cut Writing Papers Sizes
Albert	6 x 4	152.4 x 101.6
Duke	7 x 5½	177.8 x 139.7
Duchess	6 x 4½	152.4 x 114.3
Foolscap Folio	13 x 8	330.2 x 203.2
Foolscap 4to	8 x 6½	203.2 x 165.1
Large Post 4to	10 x 8	254 x 203.2
Large Post 8vo	8 x 5	203.2 x 127
Small Post 4to	9 x 7	228.6 x 177.8
Small Post 8vo	7 x 4½	177.8 x 114.3
Book and Drawing Papers Sizes
Foolscap	14 x 18¾	355.6 x 476.25
Demy	15½ x 20	393.7 x 508
Medium	17½ x 22½	444.5 x 571.5
Royal	19 x 24	482.6 x 609.6
Super Royal	19¼ x 27	488.95 x 685.8
Imperial	22 x 30¼	558.8 x 768.35
Elephant	23 x 28	584.2 x 711.2
Double Elephant	26½ x 40	673.1 x 863.6
Atlas	26¼ x 34	666.75 x 863.6
Columbier	23½ x 35	596.9 x 889
Antiquarian	31 x 53	787.4 x 1346.2
Printing Papers Sizes
Crown	16¼ x 21	412.75 x 533.4
Demy	17¾ x 22½	450.85 x 571.5
Medium	18¼ x 23	463.55 x 584.2
Royal	20 x 25	508 x 635
Super Royal	21 x 27	533.4 x 685.8
Double Pott	15 x 25	381 x 635
Double Foolscap	17 x 27	431.8 x 685.8
Double Crown	20 x 30	508 x 762
Double Demy	22½ x 35½	571.5 x 901.7
Cartridge Papers Sizes
Foolscap	14 x 18¾	355.6 x 476.25
Demy	17¾ x 22½	450.85 x 571.5
Royal	19 x 24	482.6 x 609.6
Super Royal	19¼ x 27½	488.95 x 698.5
Imperial	21 x 26	533.4 x 660.4
Elephant	23 x 28	584.2 x 711.2
Board
Royal	20 x 25	508 x 635
Postal	22½ x 28½	571.5 x 723.9
Imperial	22 x 30	558.8 x 762
Large Imperial	22 x 32	558.8 x 812.8
Index	25½ x 30½	647.7 x 774.7

Paper Sizes in the United States

19th century

An article in the March 1854 issue of Scientific American listed the following sizes:

Paper Sizes	Width x Height (Inches)	Width x Height (Millimeters)
Foolscap	14 x 17	355.6 x 431.8
Crown	15 x 20	381 x 508
Folio Post	16 x 21	406.4 x 533.4
Demy	17 x 22	431.8 x 558.8
Medium	19 x 24	482.6 x 609.6
Royal	20 x 25	508 x 635
Super Royal	22 x 27	558.8 x 685.8
Imperial	22 x 32	558.8 x 812.8
Medium and Half	24 x 28½	609.6 x 723.9
Royal and Half	25 x 29	635 x 736.6
Double Medium	24 x 38	609.6 x 965.2
Double Medium Super Royal	27 x 42	685.8 x 1066.8
Double Medium Imperial	32 x 44	812.8 x 1117.6

Top

eCommerce by CubeCart