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For reference purposes the following table lists non-metric paper sizes still in use in some parts of the world.
Designation
Dimensions (mm)
Dimensions (in)
US Engineering:
ANSI A
215.9 mm x 279.4 mm
8.5" x 11"
ANSI B
279.4 mm x 431.8 mm
11" x 17"
ANSI C
431.8 mm x 558.8 mm
17" x 22"
ANSI D
558.8 mm x 863.6 mm
22" x 34"
ANSI E
863.6 mm x 1117.6 mm
34" x 44"
US Architectural:
ARCH A
228.6 mm x 304.8 mm
9" X 12"
ARCH B
304.8 mm x 457.2 mm
12" X 18"
ARCH C
457.2 mm x 609.6 mm
18" X 24"
ARCH D
609.6 mm x 914.4 mm
24" X 36"
ARCH E
914.4 mm x 1219.2 mm
36" X 48"
Miscellaneous:
Letter
215.9 mm x 279.4 mm
8.5" x 11"
Legal
215.9 mm x 355.6 mm
8.5" x 14"
US Government
203.2 mm x 279.4 mm
8" x 11"
Statement
139.7 mm x 215.9 mm
5.5" x 8.5"
Executive
184.2 mm x 266.7 mm
7.25" x 10.5"
Folio
215.9 mm x 330.2 mm
8.5" x 13"
Quarto
215.0 mm x 275.0 mm
Tabloid
279.4 mm x 431.8 mm
11" x 17"
Ledger
279.4 mm x 431.8 mm
11" x 17"
The ISO 'A' Series
The ISO 'A' series of sheet sizes is based on a constant width to length ratio of 1: √2
.
The A0 size is defined as having an area of one square meter. This allows paper weights to be expressed in grams per square meter. Each smaller sheet size is exactly half the area of the previous size. ie. If you cut an A0 sheet in half you get two A1 sheets; If you cut an A1 sheet in half you get two A2 sheets; and so on
This relationship of 1: √2 is particularly important for reduction onto microfilm, or reduction and enlargement on photocopiers. All metric equipment including microfilm cameras, microfilm printers, photocopiers, and even drawing pen sizes, are designed around this ratio. This makes the process of archiving drawings, resizing, and modifying drawings easy.
Dimensions of Regular Sheets
Designation
Dimensions
A0
841 mm x 1189 mm
A1
594 mm x 841 mm
A2
420 mm x 594 mm
A3
297 mm x 420 mm
A4
210 mm x 297 mm
A5
149 mm x 210 mm
Oversize Sheets
Oversize sheets are used when it is desirable to give extra protection to the drawing sheets by providing a binding or trimming margin.
Dimensions of Oversize Sheets
Designation
Dimensions
RA0
860 mm x 1220 mm
RA1
610 mm x 860 mm
RA2
430 mm x 610 mm
RA3
305 mm x 430 mm
RA4
215 mm x 305 mm
RA5
153 mm x 215 mm
Rolls
The standard widths for rolls is 860 mm and 610 mm . The length of the drawing sheet can be cut as required to suit each individual drawing.
The ISO 'B' Series
The ISO 'B' series is defined to satisfy the requirements of drawing offices when the differences between the 'A' series sizes is too great. In practice they are not commonly used.
