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

ISO vs. U.S. and Canadian drawing sheets comparison. Compare ISO drawing sheets (based on ISO 216) with American drawing sheets (based on ANSI/ASME 14.1).

ISO	Width (mm)	Width (inches)	Length (mm)	Length (inches)	USA Letter	USA Sizes (inches)
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
					F	28.0 x 40.0