Topic summary
ISO 216
Extracted from the Wikipedia article International standard paper sizes.
ISO 216 is an international standard for paper sizes, used around the world except in North America, the Philippines and parts of Latin America. The standard defines the "A", "B" and "C" series of paper sizes, which includes A4, the most commonly available paper size worldwide. Two supplementary standards, ISO 217 and ISO 269, define related paper sizes.