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=== Related regional sizes === ====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 The former has been withdrawn in 2002 in favour of adopting the international standard as DIN EN ISO 216, but part 2 has been retained and was last updated in 2008.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}} ====Swedish extensions<span class="anchor" id="SIS D"></span><span class="anchor" id="SIS E"></span><span class="anchor" id="SIS F"></span><span class="anchor" id="SIS G"></span>==== [[File:Comparison SIS 014711 paper sizes.svg|thumb|upright=0.9|Comparison of ISO 216 and Swedish standard SIS 014711 paper sizes between A4 and A3 sizes]] The Swedish standard [[Swedish Standards Institute|SIS]] 01 47 11<ref name="ss014711">{{cite web |title=Papper—Formatserier A-G |url=https://www.sis.se/en/produkter/standardization/information-sciences-publishing/documents-in-administration-commerce-and-industry/ss14711/ |work=Svensk standard SS 01 47 11 Utgåva 2 |at=Page 2 Figur 1 - Serieformaten exemplifierade |publisher=Swedish Standards Institute |access-date=25 December 2019 |archive-url=https://web.archive.org/web/20131101094445/http://www.sis.se/pappersteknik/pappersprodukter/ss-14711 |archive-date=1 November 2013 |url-status=live}}{{subscription required}}</ref> generalized the ISO system of [[#ISO A|A]], [[#ISO B|B]], and [[#ISO C|C]] formats by adding D, E, F, and G formats to it. Its D format sits between a B format and the next larger A format (just like C sits between A and the next larger B). The remaining formats fit in between all these formats, such that the [[bit-reversal_permutation#Example|sequence of formats]] A4, E4, C4, G4, B4, F4, D4, *H4, A3 is a [[geometric progression]], in which the dimensions grow by a factor <math>\sqrt[16]{2}</math> from one size to the next. However, this SIS standard does not define any size between a D format and the next larger A format (called *H in the previous example). Of these additional formats, G5 (169 × 239 mm) and E5 (155 × 220 mm) are popular in Sweden and the Netherlands for printing dissertations,<ref>{{Cite web|url=http://ki.se/content/1/c6/05/90/62/Typography_en.pdf |publisher=Karolinska University Press |title=Typography and readability – a guideline |access-date=19 October 2012 |archive-url=https://web.archive.org/web/20131101001357/http://ki.se/content/1/c6/05/90/62/Typography_en.pdf |archive-date=1 November 2013}}</ref> but the other formats have not turned out to be particularly useful in practice. They have not been adopted internationally and the Swedish standard has been withdrawn. The Swedish and [[#DIN D|German D series]] basically contain the same sizes but are offset by one, i.e. DIN D4 equals SIS D5 and so on. {| class="wikitable" |+ SIS 014711 formulas,<ref>{{cite web |url=http://home.comcast.net/~tamivox/dave/IntlPaper/index.html |archive-url=https://archive.today/20140701234154/http://home.comcast.net/~tamivox/dave/IntlPaper/index.html |url-status=dead |archive-date=1 July 2014 |author-first=Dave |author-last=Barber |title=International paper sizes. A, B, C and D series |date=8 May 2012}}</ref> including the missing step, series *H, between D and A,{{pb}} <math display="inline">n = 0..10, r = \sqrt[16]{2}, s = \sqrt{\frac{1}{2}}</math> |- ! Designation ! Shorter edge ! Longer edge |- ! A''n'' | ''r''{{sup|−4}} × ''s''{{sup|''n''}} | ''r''{{sup|+4}} × ''s''{{sup|''n''}} |- ! E''n'' | ''r''{{sup|−3}} × ''s''{{sup|''n''}} | ''r''{{sup|+5}} × ''s''{{sup|''n''}} |- ! C''n'' | ''r''{{sup|−2}} × ''s''{{sup|''n''}} | ''r''{{sup|+6}} × ''s''{{sup|''n''}} |- ! G''n'' | ''r''{{sup|−1}} × ''s''{{sup|''n''}} | ''r''{{sup|+7}} × ''s''{{sup|''n''}} |- ! B''n'' | ''r''{{sup|0}} × ''s''{{sup|''n''}} | ''r''{{sup|+8}} × ''s''{{sup|''n''}} |- ! F''n'' | ''r''{{sup|+1}} × ''s''{{sup|''n''}} | ''r''{{sup|+9}} × ''s''{{sup|''n''}} |- ! D''n'' | ''r''{{sup|+2}} × ''s''{{sup|''n''}} | ''r''{{sup|+10}} × ''s''{{sup|''n''}} |- !title="Not part of the Swedish standard"| *H''n'' | ''r''{{sup|+3}} × ''s''{{sup|''n''}} | ''r''{{sup|+11}} × ''s''{{sup|''n''}} |- ! A(''n''-1) | ''r''{{sup|+4}} × ''s''{{sup|''n''}} | ''r''{{sup|+12}} × ''s''{{sup|''n''}} |} {| class="wikitable" |+ Swedish D through G series ! ''n'' !!style="display:none"| A !! '''E''' !!style="display:none"| C !! '''G''' !!style="display:none"| B !! '''F''' !! '''D''' !!style="display:none"| *H |- ! 0 |style="display:none"| 841 × 1189|| 878 × 1242||style="display:none"| 917 × 1297|| 958 × 1354||style="display:none"|1000 × 1414||1044 × 1477||1091 × 1542||style="display:none"|1139 × 1610 |- ! 1 |style="display:none"| 595 × 841 || 621 × 878 ||style="display:none"| 648 × 917 || 677 × 958 ||style="display:none"| 707 × 1000|| 738 × 1044|| 771 × 1091||style="display:none"| 805 × 1139 |- ! 2 |style="display:none"| 420 × 595 || 439 × 621 ||style="display:none"| 459 × 648 || 479 × 677 ||style="display:none"| 500 × 707 || 522 × 738 || 545 × 771 ||style="display:none"| 569 × 805 |- ! 3 |style="display:none"| 297 × 420 || 310 × 439 ||style="display:none"| 324 × 459 || 339 × 479 ||style="display:none"| 354 × 500 || 369 × 522 || 386 × 545 ||style="display:none"| 403 × 569 |- ! 4 |style="display:none"| 210 × 297 || 220 × 310 ||style="display:none"| 229 × 324 || 239 × 339 ||style="display:none"| 250 × 354 || 261 × 369 || 273 × 386 ||style="display:none"| 285 × 403 |- ! 5 |style="display:none"| 149 × 210 || 155 × 220 ||style="display:none"| 162 × 229 || 169 × 239 ||style="display:none"| 177 × 250 || 185 × 261 || 193 × 273 ||style="display:none"| 201 × 285 |- ! 6 |style="display:none"| 105 × 149 || 110 × 155 ||style="display:none"| 115 × 162 || 120 × 169 ||style="display:none"| 125 × 177 || 131 × 185 || 136 × 193 ||style="display:none"| 142 × 201 |- ! 7 |style="display:none"| 74 × 105 || 78 × 110 ||style="display:none"| 81 × 115 || 85 × 120 ||style="display:none"| 88 × 125 || 92 × 131 || 96 × 136 ||style="display:none"| 101 × 142 |- ! 8 |style="display:none"| 53 × 74 || 55 × 78 ||style="display:none"| 57 × 81 || 60 × 85 ||style="display:none"| 63 × 88 || 65 × 92 || 68 × 96 ||style="display:none"| 71 × 101 |- ! 9 |style="display:none"| 37 × 53 || 39 × 55 ||style="display:none"| 41 × 57 || 42 × 60 ||style="display:none"| 44 × 63 || 46 × 65 || 48 × 68 ||style="display:none"| 50 × 71 |- !10 |style="display:none"| 26 × 37 || 27 × 39 ||style="display:none"| 29 × 41 || 30 × 42 ||style="display:none"| 31 × 44 || 33 × 46 || 34 × 48 ||style="display:none"| 36 × 50 |} ====Japanese variation<span class="anchor" id="JIS B}"></span><span class="anchor" id="Japanese B-series variant"></span>==== The Japanese standard [[Japanese Industrial Standards|JIS P 0138]] defines two main series of paper sizes. The JIS A-series is identical to the [[#ISO A|ISO A-series]] except that it has slightly different tolerances. The area of B-series paper is 1.5 times that of the corresponding A-paper (instead of the factor <math>\sqrt{2} = 1.414...</math> for the [[#ISO B|ISO B-series]]), so the length ratio is approximately 1.22 times the length of the corresponding A-series paper. The aspect ratio of the paper is the same as for the A-series paper. Both A- and B-series paper are widely available in Japan, [[Taiwan]] and China, and most photocopiers are loaded with at least A4 and either one of A3, B4, and B5 paper. [[Cascading Style Sheets]] (CSS) only supports the most popular of the Japanese sizes, ''JIS-B4'' and ''JIS-B5''.<ref name="mozilla.org"/> {| class="wikitable" |+ JIS B series paper sizes (with rounded inch values) ! Size !! mm × mm || inch × inch |- ! 0 | {{size|1030|1456}} |- ! 1 | {{size|728|1030}} |- ! 2 | {{size|515|728}} |- ! 3 | {{size|364|515}} |- ! 4 | {{size|257|364}} |- ! 5 | {{size|182|257}} |- ! 6 | {{size|128|182}} |- ! 7 | {{size|91|128}} |- ! 8 | {{size|64|91}} |- ! 9 | {{size|45|64}} |- ! 10 | {{size|32|45}} |- ! 11 | {{size|22|32}} |- ! 12 | {{size|16|22}} |} {| class="wikitable" |+ JIS P 0202 raw sizes (with rounded inch values) ! Size !! mm × mm || inch × inch ||title="aspect ratio"| AR || sun × sun |- !title="Between ISO RA1 and SRA1"| A ({{lang|ja|列本判}}) | {{size|625|880|ar=on}} || {{resx|20.6|29}} |- !title="JIS B1 oversize"| B ({{lang|ja|列本判}}) | {{size|765|1085|ar=on}} || {{resx|25.25|35.8}} |- ! {{nihongo||四六判|Shiroku-ban}} (4-6) | {{size|788|1091|ar=on}} || {{resx|26|36}} |- ! {{nihongo3|Chrysanthemum|菊判|Kiku-ban}} | {{size|636|939|ar=on}} || {{resx|21|31}} |- ! {{nihongo||ハトロン判|Hattron}} | {{size|900|1200|ar=on}} || {{resx|29.7|39.6}} |} A popular size for books, dubbed AB, combines the shorter edges of A4 and B4. Another two with an aspect ratio approximating [[16:9]] are 20% narrower variants of A6 and B6, respectively, the latter resulting from cutting JIS B1 into {{resx|4|10}} sheets (thus "B40"). There are also a number of traditional paper sizes, which are now used mostly by printers. The most common of these old series is the {{transliteration|ja|[[#K|Shiroku-ban]]}} and the {{transliteration|ja|Kiku}} paper sizes. {| class="wikitable" |+ Other Japanese paper sizes (with rounded inch values){{qn|date=January 2020}} ! Size ! mm × mm || inch × inch !!title="aspect ratio"| AR !! sun × sun !! Notes |- ! AB | {{size|210|257|ar=on}} | {{resx|6.93|8.48}} || {{resx|A4/A5|JIS B4/B5}} |- ! B40 | {{size|103|182|ar=16:9}} || {{resx|3.4|6}} | JIS B1 {{resx|{{frac|height|10}}|{{frac|width|4}}}} |- ! 35 | {{size|84|148|ar=16:9}} || {{resx|2.77|4.88}} | Trimmed {{resx|3|5}}<!--?--> |- !rowspan=4| {{transliteration|ja|Kiku-ban}} | {{size|227|304|ar=on}} || {{resx|7.5|10}} <!--secondary variant according to Japanese Wikipedia, previously listed with 306 mm--> |- | {{size|218|304|ar=on}} || {{resx|7.2|10}} |- | {{size|152|227|ar=on}} || {{resx|5|7.5}} <!--secondary variant, previously listed with 151 mm--> |- | {{size|152|218|ar=on}} || {{resx|5|7.2}} |} ====Chinese extensions<span class="anchor" id="GB/T 148"></span>==== The Chinese standard GB/T 148–1997,<ref>{{Cite web |url=http://www.gb688.cn/bzgk/gb/newGbInfo?hcno=20746CFEE63514B24DD64A415CB65377 |script-title=zh:国家标准 {{!}} GB/T 148-1997 |date=26 May 1997 |website=Standardization Administration of China |access-date=13 April 2017 |archive-url=https://web.archive.org/web/20170413154251/http://www.gb688.cn/bzgk/gb/newGbInfo?hcno=20746CFEE63514B24DD64A415CB65377 |archive-date=13 April 2017 |url-status=dead }}</ref> which replaced GB 148–1989, documents the standard ISO series, A and B, but adds a custom D series. This Chinese format originates from the [[Republic of China (1912–1949)]]. The D series is not identical to the German or Swedish D series. It does not strictly follow the same principles as ISO paper sizes: The aspect ratio is only very roughly <math>\sqrt{2}</math>. The short side of the size is always 4 mm longer than the long side of the next smaller size. The long side of the size is always exactly – i.e. without further rounding – twice as long as the short side of the next smaller size. {| class="wikitable" |+ [[Standardization Administration of China|SAC]] paper sizes (with rounded inch values and raw sizes) ! Format !colspan=2| D series !rowspan=2 title="aspect ratio"| AR !rowspan=2| Alias !colspan=2| Untrimmed sizes |- ! Size ! mm × mm || inch × inch ! mm × mm || inch × inch |- ! 0 | {{size|764|1064}} | 1.3927 | 1K | {{size|780|1080}} |- ! 1 | {{size|532|760}} | 1.4286 | 2K | {{size|540|780}} |- ! 2 | {{size|380|528}} | 1.3895 | 4K | {{size|390|540}} |- ! 3 | {{size|264|376}} | 1.{{overline|4242}} | 8K | {{size|270|390}} |- ! 4 | {{size|188|260}} | 1.3830 | 16K | {{size|195|270}} |- ! 5 | {{size|130|184}} | 1.4154 | 32K | {{size|135|195}} |- ! 6 | {{size|92|126}} | 1.3696 | 64K | {{size|97|135}} |} ==== Indian variants ==== The ''Bureau of Indian Standards'' recommends the "ISO-A series" size of drawing sheet for engineering drawing works. The Bureau of Indian Standards specifies all the recommendations for engineering drawing sheets in its bulletin IS 10711: 2001.<ref>{{Cite book|url=https://law.resource.org/pub/in/bis/S01/is.sp.46.2003.pdf|title=SP 46 (2003): Engineering Drawing Practice for Schools and Colleges |publisher=Bureau of Indian Standards |isbn=81-7061-019-2 |date=Jul 2003 |url-status=live |archive-url=https://web.archive.org/web/20230909054902/https://law.resource.org/pub/in/bis/S01/is.sp.46.2003.pdf |archive-date= Sep 9, 2023 }}</ref> The Bureau extended the ISO-A series with a '''Special Elongated Sizes''' (Second Choice). These sizes are achieved by increasing the shorter dimensions of a sheet of the ISO A series to lengths that are multiples of the shorter dimensions of the chosen basic sheet; in effect, all of the Indian elongated sizes emulate having several regular-size sheets joined on their long edge. {| class="wikitable" |+ IS Special Elongated Sizes (Second Choice) with rounded inch values ! Size !! mm × mm !! in × in !!title="aspect ratio"| AR |- ! A3 x 3 | {{size|420|891|ar=on}} |- ! A3 x 4 | {{size|420|1189|ar=on}} |- ! A4 x 3 | {{size|297|630|ar=on}} |- ! A4 x 4 | {{size|297|841|ar=on}} |- ! A4 x 5 | {{size|297|1051|ar=on}} |} There is also a '''Exceptional Elongated Sizes''' (Third Choice). These sizes are obtained by increasing the shorter dimensions of a sheet of the ISO-A series to lengths that are multiples of the shorter dimensions of the chosen basic sheet. These sizes are used when a very large or extra elongated sheet is needed. {| class="wikitable" |+ IS Exceptional Elongated Sizes (Third Choice) with rounded inch values ! Size !! mm × mm !! in × in !!title="aspect ratio"| AR |- ! A0 x 2 | {{size|1189|1682|ar=2:√2}} |- ! A0 x 3 | {{size|1189|2523|ar=on}} |- ! A1 x 3 | {{size|841|1783|ar=on}} |- ! A1 x 4 | {{size|841|2378|ar=on}} |- ! A2 x 3 | {{size|594|1261|ar=on}} |- ! A2 x 4 | {{size|594|1682|ar=on}} |- ! A2 x 5 | {{size|594|2102|ar=on}} |- ! A3 x 5 | {{size|420|1486|ar=on}} |- ! A3 x 6 | {{size|420|1783|ar=on}} |- ! A3 x 7 | {{size|420|2080|ar=on}} |- ! A4 x 6 | {{size|297|1261|ar=on}} |- ! A4 x 7 | {{size|297|1471|ar=on}} |- ! A4 x 8 | {{size|297|1682|ar=on}} |- ! A4 x 9 | {{size|297|1892|ar=on}} |} ====Soviet variants<span class="anchor" id="OST 303"></span><span class="anchor" id="OST 5115"></span>==== The first standard of paper size in the Soviet Union was OST 303 in 1926. Six years later, it was replaced by OST 5115 which generally followed DIN 476 principles, but used Cyrillic lowercase letters instead of Latin uppercase, had the second row shifted so that б<sub>0</sub> (B0) roughly corresponded to B1 and, more importantly, had slightly different sizes:<ref>{{Cite web |last=Митяев |first=К. Г. |date=1946 |title=Теория и практика архивного дела |trans-title=Theory and practice of archiving |url=http://www.spsl.nsc.ru/FullText/Книги/Уст.%20902%20М.678/Уст.%20902%20М.678.pdf |url-status=dead |archive-url=https://web.archive.org/web/20200208012944/http://www.spsl.nsc.ru/FullText/%D0%9A%D0%BD%D0%B8%D0%B3%D0%B8/%D0%A3%D1%81%D1%82.%20902%20%D0%9C.678/%D0%A3%D1%81%D1%82.%20902%20%D0%9C.678.pdf |archive-date=2020-02-08 |access-date=2022-07-15}}</ref> {| class="wikitable" |+ OST 5115 formats (1932) ! Format !!colspan=2| а (A) !!colspan=2| б (B) !!colspan=2| в (V, C) |- ! Size ! mm × mm !! inch × inch ! mm × mm !! inch × inch ! mm × mm !! inch × inch |- ! 0 | {{size|814|1152}} || {{size|747|1056}} ||colspan=2| |- ! 1 | {{size|576|814}}|| {{size|528|747}}|| {{size|628|888}} |- ! 2 | {{size|407|576}}|| {{size|373|528}}|| {{size|444|628}} |- ! 3 | {{size|288|407}}|| {{size|264|373}}|| {{size|314|444}} |- ! 4 | {{size|203|288}}|| {{size|186|264}}|| {{size|222|314}} |- ! 5 | {{size|144|203}}|| {{size|132|186}}|| {{size|157|222}} |- ! 6 | {{size|101|144}}|| {{size|93|132}}|| {{size|111|157}} |- ! 7 | {{size|72|101}}|| {{size|66|93}}|| {{size|78|111}} |- ! 8 | {{size|50|72}}|| {{size|46|66}}|| {{size|55|78}} |- ! 9 | {{size|36|50}}|| {{size|33|46}}|| {{size|39|55}} |- ! 10 | {{size|25|36}}|| {{size|23|33}} ||colspan=2 rowspan=4| |- ! 11 | {{size|18|25}}|| {{size|16|23}} |- ! 12 | {{size|12|18}}|| {{size|11|16}} |- ! 13 | {{size|9|12}} ||colspan=2| |} The general adaptation of ISO 216 in the Soviet Union, which replaced OST 5115, was GOST 9327. In its 1960 version, it lists formats down to A13, B12 and C8 and also specifies {{frac|1|2}}, {{frac|1|4}} and {{frac|1|8}} prefixes for halving the shorter side (repeatedly) for stripe formats, e.g. {{frac|1|2}}A4 = 105 mm × 297 mm. [[File:Old Soviet standard for paper sizes.svg|thumb|A1, A2, A3, A4 and non-ISO sizes as GOST 3450-60 formats]] A standard for technical drawings from 1960, GOST 3450,<ref>{{cite web |url=http://weldworld.ru/theory/cherchenie/formaty.html#link2 |title=Formaty |script-title=ru:Форматы |trans-title=Formats |website=Мир Сварки |language=ru |access-date=2 December 2017 |archive-url=https://web.archive.org/web/20171202203209/http://weldworld.ru/theory/cherchenie/formaty.html#link2 |archive-date=2 December 2017 |url-status=live}}</ref> introduces alternative numeric format designations to deal with very high or very wide sheets. These 2-digit codes are based upon A4 = "11": The first digit is the factor the longer side (297 mm) is multiplied by and the second digit is the one for the shorter side (210 mm), so "24" is 2×297 mm × 4×210 mm = 594 mm × 840 mm. {| class="wikitable" |+ Soviet formats with multiplied shorter side (mm×mm) |- | ''n'' ! (×1) !! ×2 !! ×3 !! ×4 !! ×5 !! ×6 |- !title="4·4n"| 5 |title="4·4"| = A0 ||title="4·8"| = 2A0||title="4·12"|2523 × 1189||title="4·16"|3364 × 1189||title="4·20"|4204 × 1189 ||title="4·24"|5045 × 1189 |- !title="2n·4"| 4 |title="2·4"| = A1 ||title="4·4"| = A0 ||title="6·4"|1784 × 841 ||title="8·4"|2378 × 841 ||title="10·4"|2973 × 841 ||title="12·4"|3568 × 841 |- !title="2·2n"| 3 |title="2·2"| = A2 ||title="2·4"| = A1 ||title="2·6"|1261 × 595 ||title="2·8"|1682 × 595 ||title="2·10"|2102 × 595 ||title="2·12"|2523 × 595 |- !title="n·2"| 2 |title="1·2"| = A3 ||title="2·2"| = A2 ||title="3·2"| 892 × 420 ||title="4·2"|1189 × 420 ||title="5·2"|1487 × 420 ||title="6·2"|1784 × 420 |- !title="1·n"| 1 |title="1·1"| = A4 ||title="1·2"| = A3 ||title="1·3"| 631 × 297 ||title="1·4"| 841 × 297 ||title="1·5"|1051 × 297 ||title="1·6"|1261 × 297 |- !title="{{frac|1|2}}n·1"| 0 |title="{{frac|1|2}}·1"| = A5 ||title="1·1"| = A4 ||title="{{frac|1|1|2}}·1"|446 × 210 ||title="2·1"| 595 × 210 ||title="{{frac|2|1|2}}·1"| 743 × 210 ||title="3·1"| 892 × 210 |} [[File:GOST 2301-68.svg|thumb|A2, A3, A4 and some derived non-ISO sizes as GOST 2301-68 formats]] GOST 3450 from 1960 was replaced by ESKD GOST 2301 in 1968,<ref>{{cite web |url=http://graph.power.nstu.ru/wolchin/umm/eskd/eskd/GOST/2_301.htm |script-title=ru:Форматы (ЕСКД ГОСТ 2.301-68) |title=Formaty (ESKD GOST 2.301-68) |trans-title=Formats |website=Единая Система Конструкторской Документации |language=ru |access-date=2 December 2017 |archive-url=https://web.archive.org/web/20161201015706/http://graph.power.nstu.ru/wolchin/umm/eskd/eskd/GOST/2_301.htm |archive-date=1 December 2016 |url-status=live}}</ref> but the numeric designations remained in popular use much longer. The new designations were not purely numeric but consisted of the ISO label followed by an 'x', or possibly the multiplication sign '×', and the factor, e.g. DIN 2A0 = GOST A0×2, but DIN 4A0 ≠ GOST A0×4, also listed are: A0×3, A1×3, A1×4, A2×3–A2×5, A3×3–A3×7, A4×3–A4×9. The formats ...×1 and ...×2 usually would be aliases for existing formats.
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