technical drawing paper sizes

in the United States

From ? to 1995, a series of paper sizes used by architects and engineers in the United States for technical drawings.

Engineering Drawing Sizes
ANSI
Size
Dimensions
(inches)
Dimensions
(millimeters)
A 8.5 × 11 216 × 279
B 11 × 17 279 × 432
C 17 × 22 432 × 559
D 22 × 34 559 × 864
E 34 × 44 864 × 1118

In 1995, the standard was revised and the ISO sizes A0 to A4 were adopted for this type of drawing.

American National Standard ANSI/ASME Y14.1

Architectural Drawing Sizes
Size Dimensions
(inches)
Dimensions
(millimeters)
ARCH A ARCH 1 9 × 12 229 × 305
ARCH B ARCH 2 12 × 18 305 × 457
ARCH C ARCH 3 18 × 24 457 × 610
ARCH D ARCH 4 24 × 36 610 × 914
ARCH E1 ARCH 5 30 × 42 762 × 1067
ARCH E ARCH 6 36 × 48 914 × 1219

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