How the Architectural and ANSI Paper Sizes Differ


Reference Number: KB-00538
Last Modified: June 15, 2016

The information in this article applies to:

Chief Architect Premier or Chief Architect Interiors


QUESTION

What are the differences between Architectural and ANSI paper sizes?


ANSWER

Architectural and ANSI (American National Standards Institute) are two paper size standards commonly used in the United States. 

Below are the Architectural and ANSI paper sizes, listed in inches.


ANSI Sizes:

  • ANSI A (Letter) - 8.5" x 11"

  • ANSI A (Legal) - 8.5" x 14"

  • ANSI B (Tabloid) - 11" x 17"

  • ANSI C - 17" x 22"

  • ANSI D - 22" x 34"

  • ANSI E - 34" x 44"



Architectural Sizes:

  • Architectural A (ARCH A) - 9" x 12" 

  • Architectural B (ARCH B) - 12" x 18"

  • Architectural C (ARCH C) - 18" x 24"

  • Architectural D (ARCH D) -  24" x 36"

  • Architectural E1 - 30" x 42"

  • Architectural E - 36" x 48"

To learn more about paper sizes not listed here, such as those used in other countries, please see Wikipedia's article on Paper Size.