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

ISO compared with U.S. and Canadian drawing sheets

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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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  • en: ISO A0 A1 A2 A3 A4 A5 USA
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