📄 Paper Size Reference (A/B/Letter series)
Exact ISO 216 (A series), ISO 269 (B series) and North American paper dimensions, searchable — plus a lookup that finds the closest standard size to any width/height you give it.
Search
| Size | mm | inches |
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Find the closest standard size
Enter any width & height — order doesn't matter — and we'll find the nearest standard size by dimension.