About this sitePS-19
About Paper Lab
Paper Lab lets you check paper sizes, types and thickness against standards and manufacturer documents.
In this article (4 sections)
Where the information comes from
ISO 216, JIS P 0138, JIS S 5502 and Japan Post guidance. Numbers are kept in one data file; tables and calculators are generated from it.
Who is Kou, our guide?
Kou is the shoebill character who shows you around this site. In the articles, Kou sums up tips and warnings in speech bubbles.
Kou: Knows everything. Sometimes writes things that are wrong. Sorry in advance.
Hi, I'm Kou. If you're in a hurry, just read my speech bubbles.
Privacy
No analytics. The calculators run in your browser only and do not send or store what you type. If Google AdSense ads are shown in the future, Google will use cookies to serve ads; you can opt out in Google's ad settings.