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