Paper Drafting Sizes - Comparing ISO Drawing Sheets with USA Drawing Sheets

ISO drawing sheets compared with U.S. and Canadian drawing sheets

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

ISO					USA Sizes
Letter	Width		Length		Letter	inches
	mm	inches	mm	inches
					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