Editing Paper size (section)

====German original<span class="anchor" id="DIN D"></span><span class="anchor" id="DIN 2A0"></span><span class="anchor" id="DIN 4A0"></span><span class="anchor" id="ISO 2A0"></span><span class="anchor" id="ISO 4A0"></span><span class="anchor" id="German extensions"></span>====

The German standard DIN 476 was published on 18 August 1922 and is the original specification of the [[#DIN A|A]], [[#DIN B|B]] and [[#DIN C|C sizes]]. In 1991, it was split into DIN 476-1 for the A and B formats and 476-2 for the C series. The former has been withdrawn in 2002 in favour of adopting the international standard as DIN EN ISO 216, but part 2 has been retained and was last updated in 2008.

The first and the second editions of DIN 476 from 1922 and 1925 also included a D series.

{| class="wikitable"
|+ DIN D series paper sizes in portrait view (with rounded inch values)
! Format
!colspan="2"| [[#DIN D|D series]]
|-
! Size
! mm × mm || inch × inch
|-
! 0
| {{size|771|1090}}
|-
! 1
| {{size|545|771}}
|-
! 2
| {{size|385|545}}
|-
! 3
| {{size|272|385}}
|-
! 4
| {{size|192|272}}
|-
! 5
| {{size|136|192}}
|-
! 6
| {{size|96|136}}
|-
! 7
| {{size|68|96}}
|-
! 8
| {{size|48|68}}
|}

The smallest formats in the original specifications for each series were A13, B13, C8, and D8. Sizes A11 through A13 were no longer listed in the 1930 edition, nor were B11 through B13. C9 and C10 were added in the 1976 revision for compatibility with photography sizes: C8 closely matches [[photo print sizes|6×9 photos]], and C9 and C10 closely match 7×7 and 5×5 [[diapositive|slides]], respectively.

{| class="wikitable"
|+ DIN 476:1922 tiny formats (with rounded inch values)
! Format !!colspan=2| A !!colspan=2| B
|-
! Size !! mm × mm || inch × inch !! mm × mm || inch × inch
|-
! 11
| {{size|18|26}}
| {{size|22|31}}
|-
! 12
| {{size|13|18}}
| {{size|15|22}}
|-
! 13
| {{size|9|13}}
| {{size|11|15}}
|}

DIN 476 provides for formats larger than A0, denoted by a prefix factor. In particular, it lists the formats 2A0 and 4A0, which are twice and four times the size of A0 respectively. However, ISO 216:2007 notes 2A0 and 4A0 in the table of ''Main series of trimmed sizes'' (ISO A series) as well: "The rarely used sizes [2A0 and 4A0] which follow also belong to this series."

{| class="wikitable"
|+ DIN 476 overformats (with rounded inch values)
! Name !! mm × mm !! inch × inch
|-
! 4A0
| {{size|1682|2378}}
|-
! 2A0
| {{size|1189|1682}}
|}

DIN 476 also used to specify slightly tighter tolerances than ISO 216:

* ±{{cvt|1|mm|in}} for dimensions up to {{cvt|150|mm|in}},
* ±{{cvt|1.5|mm|in}} for lengths in the range {{cvt|150 to 600|mm|in}} and
* ±{{cvt|2|mm|in}} for any dimension above {{cvt|600|mm|in}}.

There used to be a standard, DIN 198, that was just a table of recommended A series formats for a number of business applications. The 1976 edition of this standard introduced a size '''{{frac|2|3}} A4''' {{resx|198 mm|210 mm}} and suggested it for some forms and slips.{{citation needed|date=February 2025}}