A4

Summary

A4 is a paper size^[1]. A4 draws 248 Wikipedia views per month (paper_size category, ranking #2 of 4).^[2]

Key Facts

• A4 is credited with the discovery of Walter Porstmann^[3].
• A4's instance of is recorded as paper size^[4].
• A4's part of is recorded as A series^[5].
• A4's Commons category is recorded as DIN A4^[6].
• +1922-00-00T00:00:00Z marks the founding of A4^[7].
• A4's different from is recorded as A4^[8].
• A4's different from is recorded as octavo^[9].
• A4's height is recorded as {'unit': 'Q174789', 'amount': '+297'}^[10].
• A4's width is recorded as {'unit': 'Q174789', 'amount': '+210'}^[11].
• A4's uses is recorded as square root of 2^[12].
• A4's Google Knowledge Graph ID is recorded as /g/121bwrgt^[13].
• A4's Great Norwegian Encyclopedia ID is recorded as A4^[14].
• A4's Yle topic ID is recorded as 18-159625^[15].
• A4's Lex ID is recorded as A4^[16].
• A4's Namuwiki ID is recorded as A4^[17].
• A4's Dictionary of Archives Terminology ID is recorded as a4^[18].
• A4's WikiKids ID is recorded as A4_(papierformaat)^[19].
• A4's ONIX codelist ID is recorded as 175/B121^[20].
• A4's museum-digital tag ID is recorded as 41094^[21].
• A4's ComputerLanguage.com definition is recorded as A4+paper^[22].
• A4's Dimensions.com element ID is recorded as a4-paper^[23].

Body

Publication

A4's part of is recorded as A series^[5].

Why It Matters

A4 draws 248 Wikipedia views per month (paper_size category, ranking #2 of 4).^[2] A4 has Wikipedia articles in 10 language editions, a strong signal of global cultural recognition.^[24] A4 is known by 16 alternative names across languages and contexts.^[25]