Imperial Paper Sizes

Further Information

Before the United Kingdom adopted the ISO 216 standard, British Imperial paper sizes were used. The Imperial paper sizes were used to define large sheets of paper, and the naming convention was derived from the sheet name, and how many times it was folded. For example ‘Royal’ paper is 508mm x 635mm, and when it is folded three times, it makes 8 sheets and goes by the name ‘Royal Octavo’ which is 253 mm x 158 mm. This is a name given to modern hardbound books.

Format Width x Height (mm) Width x Height (in)
Emperor 1219 x 1829 mm 47.992 x 72.008 in
Quad Demy 889 x 1143 mm 35 x 45 in
Antiquarian 787 x 1346 mm 30.984 x 52.992 in
Grand Eagle 730 x 1067 mm 28.74 x 42.008 in
Double Elephant 678 x 1016 mm 26.693 x 40 in
Atlas 660 x 864 mm 25.984 x 34.016 in
Columbier 597 x 876 mm 23.504 x 34.488 in
Double Demy 572 x 902 mm 22.52 x 35.512 in
Imperial 559 x 762 mm 22.008 x 30 in
Double Large Post 533 x 838 mm 20.984 x 32.992 in
Elephant 584 x 711 mm 22.992 x 27.992 in
Princess 546 x 711 mm 21.496 x 27.992 in
Cartridge 533 x 660 mm 20.984 x 25.984 in
Royal 508 x 635 mm 20 x 25 in
Sheet, Half Post 495 x 597 mm 19.488 x 23.504 in
Double Post 483 x 762 mm 19.016 x 30 in
Super Royal 483 x 686 mm 19.016 x 27.008 in
Broadsheet 457 x 610 mm 17.992 x 24.016 in
Medium 470 x 584 mm 18.504 x 22.992 in
Demy 445 x 572 mm 17.52 x 22.52 in
Copy Draught 406 x 508 mm 15.984 x 20 in
Large Post 394 x 508 mm 15.512 x 20 in
Post 394 x 489 mm 15.512 x 19.252 in
Crown 381 x 508 mm 15 x 20 in
Pinched Post 375 x 470 mm 14.764 x 18.504 in
Foolscap 343 x 432 mm 13.504 x 17.008 in
Small Foolscap 337 x 419 mm 13.268 x 16.496 in
Brief 343 x 406 mm 13.504 x 15.984 in
Pott 318 x 381 mm 12.52 x 15 in
Quarto 229 x 279 mm 9.016 x 10.984 in
Monarch 184 x 267 mm 7.244 x 10.512 in