Paper Drafting Sizes - Comparing ISO and U.S. Drawing Sheets

ISO compared with U.S. and Canadian drawing sheets

Iso paper sizes

The table below can be used to compare ISO drawing sheets (based on ISO 216) with to American drawing sheets (based on ANSI/ASME 14.1): 

ISOUSA Sizes
LetterWidthLengthLetterinches
mminchesmminches
          F 28.0 x 40.0
A0 841 33.11 1189 46.81 E 34.0 x 44.0
A1 594 23.39 841 33.11 D 22.0 x 34.0
A2 420 16.54 594 23.39 C 17.0 x 22.0
A3 297 11.69 420 16.54 B 11.0 x 17.0
A4 210 8.27 297 11.69 A 8.5 x 11.0

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