ANSI Series

In 1995 the American National Standards Institute (ANSI) adopted ANSI/ASME Y14.1, which defines paper sizes based upon the de facto standard ‘US Letter’ size (8.5”x 11” or 216mm x 279mm) which is called ‘ANSI A’, the already existing ‘US Ledger/Tabloid’ size was also included in the series as ‘ANSI B’. This series is similar to the ISO 216 standard in that by folding one sheet from the series in half parallel to the shortest side, you get the next size down in the series. However, the ANSI series differs from the ISO 216 standard in that the arbitrary aspect ratio forces the series to have two alternating aspect ratios.

ANSI Series Paper Sizes Table

Download ANSI Series Paper Sizes PDF Factsheet

QuickLinks
A Series Paper Sizes
A4 Paper Size
US Letter Paper Size
Billboard Sizes
Newspaper Sizes
ISO Envelope Sizes
US Envelope Sizes
ANSI Paper Sizes
Business Card Sizes
Photo Sizes
Old Imperial Sizes
Canadian Paper Sizes
North American Architectural Sizes


Paper Sizes is designed and maintained by Stock Displays - Poster frames delivered next day from stock.