Disclaimer
Measure carefully. Confirm the production requirement.
Last updated August 31, 2026.
Independent reference
Paper Size Lab is an independent informational website. It is not affiliated with, endorsed by, or acting for ISO, ASME, printer manufacturers, paper companies, postal operators, or print vendors. Names and marks belong to their respective owners.
No professional or production guarantee
The site provides general paper-dimension and printing information, not legal, engineering, postal, procurement, or professional print-production advice. A value shown here does not guarantee that a printer, cutter, envelope, mailing service, filing system, or submission portal will accept a particular job.
Bleed, trim, scaling, and tolerances
Listed dimensions describe nominal trimmed sheet sizes unless a page says otherwise. Production files may require bleed, safe areas, crop marks, imposition, or vendor-specific tolerances. Confirm the final specification with the organization producing or accepting the document.
Accuracy and availability
We aim to calculate conversions consistently and cite defining standards, but standards, software defaults, manufacturer capabilities, and external pages can change. Content is provided “as available” without a guarantee that it is error-free or suitable for a particular purpose.
External links
Links to standards organizations and other sources are provided for verification and context. Paper Size Lab does not control their content, prices, availability, or privacy practices.