ANSI C is a paper size that is typically used for architectural drawings and diagrams.


ANSI C measures 432 x 559 millimeters or 17.00 x 22.00 inches. In PostScript, its dimensions are 1224 x 1584 points.

Part of the ANSI standard

As its name indicates, ANSI C is part of a set or range of page sizes, called the ANSI/ASME Y14.1 standard. This US standard was established in 1995. By folding an ANSI C in two along its shortest side, you create an ANSI B document. Depending on the orientation, the size is usually called Tabloid or Ledger. Two ANSI C pages next to each other in a spread equals the ANSI D paper size.


For architectural drawings, the ARCH C paper size is a valid alternative. It measures 18 x 24″ or 457.2 x 609.6 mm. Outside of the USA and Canada, the international ISO 216 standard is used. The ISO-alternative to ANSI C is called A2 or DIN A2 and measures 16.54 x 23.39″ or 420 × 594 mm.

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