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{{Short description|Sets of characters used in the 1980s & 90s}}
'''Windows code pages''' are sets of characters or [[code pages]] (known as [[character encoding]]s in other operating systems) used in [[Microsoft Windows]] from the 1980s and 1990s. Windows code pages were gradually superseded when [[Unicode in Microsoft Windows|Unicode was implemented in Windows]],{{cn|date=October 2020}} although they are still supported both within Windows and other platforms, and still apply when [[Alt code]] shortcuts are used.
Current Windows versions support [[Unicode]], new Windows applications should use Unicode (UTF-8) and not 8-bit character encodings.<ref>{{cite web |url=https://learn.microsoft.com/en-us/windows/win32/intl/unicode-and-character-sets |title=Unicode and character sets |publisher=Microsoft |date=2023-06-13 |access-date=2024-05-27}}</ref>
There are two groups of system code pages in Windows systems: OEM and Windows-native ("ANSI") code pages.
(ANSI is the [[American National Standards Institute]].) Code pages in both of these groups are [[extended ASCII]] code pages. Additional code pages are supported by standard Windows conversion routines, but not used as either type of system code page.
==ANSI code page<span class="anchor" id="ANSI"></span>==
{{Infobox character encoding
|name=Windows-125x series
|alias=ANSI (misnomer)
|mime=
|image=
|caption=
|standard=WHATWG Encoding Standard
|extends=[[ASCII]]
|prev=[[ISO 8859]]
|next=[[Unicode]]<br/>[[UTF-16]] (in Win32 API)<br/>[[UTF-8]] (for files)
|otherrelated=
}}
'''ANSI code pages''' (officially called "Windows code pages"<ref>{{Cite web
|date=2016-03-07
|title=Code Pages
|url=https://msdn.microsoft.com/en-us/goglobal/bb964653.aspx
|access-date=2021-05-26
|archive-url=https://web.archive.org/web/20160307222735/https://msdn.microsoft.com/en-us/goglobal/bb964653.aspx
|archive-date=2016-03-07}}</ref> after Microsoft accepted the former term being a misnomer<ref name="ms glossary">{{Cite web
|url=https://msdn.microsoft.com/en-us/goglobal/bb964658.aspx#a
|title=Glossary of Terms Used on this Site
|date=December 8, 2018
|archive-url=https://web.archive.org/web/20181208141313/https://msdn.microsoft.com/en-us/goglobal/bb964658.aspx#a
|archive-date=2018-12-08
|quote=The term "ANSI" as used to signify Windows code pages is a historical reference, but is nowadays a misnomer that continues to persist in the Windows community. The source of this comes from the fact that the Windows code page 1252 was originally based on an ANSI draft—which became International Organization for Standardization (ISO) Standard 8859-1. “ANSI applications” are usually a reference to non-Unicode or code page–based applications.}}</ref>) are used for native non-Unicode (say, [[byte oriented]]) applications using a [[graphical user interface]] on Windows systems. The term "ANSI" is a misnomer because these Windows code pages do not comply with any [[American National Standards Institute|ANSI (American National Standards Institute)]] standard; [[Code Page 1252|code page 1252]] was based on an early ANSI draft that became the international standard [[ISO 8859-1]],<ref name="ms glossary" /> which adds a further 32 control codes and space for 96 printable characters. Among other differences, Windows code-pages allocate printable characters to the supplementary control code space, making them at best illegible to standards-compliant operating systems.)
Most [[Legacy system|legacy]] "ANSI" code pages have code page numbers in the pattern 125x. However, [[windows-874|874]] (Thai) and the East Asian multi-byte "ANSI" code pages ([[Windows-31J|932]], [[windows-936|936]], [[Unified Hangul Code|949]], [[Code page 950|950]]), all of which are also used as OEM code pages, are numbered to match IBM encodings, none of which are identical to the Windows encodings (although most are similar). While [[windows-1258|code page 1258]] is also used as an OEM code page, it is original to Microsoft rather than an extension to an existing encoding. IBM have assigned their own, different numbers for Microsoft's variants, these are given for reference in the lists below where applicable.
All of the 125x Windows code pages, as well as 874 and 936, are labelled by [[Internet Assigned Numbers Authority]] (IANA) as "Windows-''number''", although "Windows-936" is treated as a synonym for "[[GBK (character encoding)|GBK]]". Windows code page 932 is instead labelled as "Windows-31J".<ref>{{Cite web
|title=Character Sets
|url=http://www.iana.org/assignments/character-sets/character-sets.xhtml
|access-date=2021-05-26
|website=www.iana.org
|archive-date=2021-05-25
|archive-url=https://web.archive.org/web/20210525003138/https://www.iana.org/assignments/character-sets/character-sets.xhtml
|url-status=live}}</ref>
ANSI Windows code pages, and especially the code page [[Windows-1252|1252]], were so called since they were purportedly based on drafts submitted or intended for ANSI. However, ANSI and [[International Organization for Standardization|ISO]] have not standardized any of these code pages. Instead they are either:<ref name="ms glossary"/>
* Supersets of the standard sets such as those of [[ISO 8859]] and the various national standards (like [[Windows-1252]] vs. [[ISO-8859-1]]),
* Major modifications of these (making them incompatible to various degrees, like [[Windows-1250]] vs. [[ISO-8859-2]])
* Having no parallel encoding (like [[Windows-1257]] vs. [[ISO-8859-4]]; [[ISO-8859-13]] was introduced much later). Also, [[Windows-1251]] follows neither the ISO-standardised [[ISO-8859-5]] nor the then-prevailing [[KOI-8]].
Microsoft assigned about twelve of the [[typography]] and business characters (including notably, the [[euro sign]], €) in CP1252 to the [[code point]]s 0x80–0x9F that, in ISO 8859, are assigned to [[C1 control codes]]. These assignments are also present in many other ANSI/Windows code pages at the same code-points. Windows did not use the C1 control codes, so this decision had no direct effect on Windows users. However, if included in a file transferred to a standards-compliant platform like Unix or MacOS, the information was invisible and potentially disruptive.{{cn|date=February 2021}}
== OEM code page{{anchor|OEM}} ==
The '''OEM code pages''' ([[original equipment manufacturer]]) are used by [[Win32 console]] applications, and by [[virtual DOS machine|virtual DOS]], and can be considered a holdover from [[DOS]] and the original [[IBM PC]] architecture. A separate suite of code pages was implemented not only due to compatibility, but also because the [[VGA-compatible text mode#Fonts|fonts of VGA (and descendant) hardware]] suggest encoding of [[box-drawing character|line-drawing characters]] to be compatible with [[code page 437]]. Most OEM code pages share many code points, particularly for non-letter characters, with the second (non-ASCII) half of CP437.
A typical OEM code page, in its second half, does not resemble any ANSI/Windows code page even roughly. Nevertheless, two single-byte, fixed-width code pages (874 for [[Thai language|Thai]] and 1258 for [[Vietnamese language|Vietnamese]]) and four multibyte [[CJK characters|CJK]] code pages ([[Code page 932 (Microsoft Windows)|932]], [[Code page 1386|936]], [[Windows-949|949]], [[Windows-950|950]]) are used as both OEM and ANSI code pages. Code page 1258 uses [[combining diacritic]]s, as Vietnamese requires more than 128 letter-diacritic combinations. This is in contrast to [[VISCII]], which replaces some of the [[C0 control codes|C0]] (i.e. ASCII) control codes.
== History ==
Early computer systems had limited storage and restricted the number of [[bit]]s available to encode a [[character (computing)|character]]. Although earlier proprietary encodings had fewer, the [[ASCII|American Standard Code for Information Interchange]] (ASCII) settled on seven bits: this was sufficient to encode a 96 member subset of the characters used in the US. As eight-bit [[byte]]s came to predominate, Microsoft (and others) expanded the repertoire to 224, to handle a variety of other uses such a box-drawing symbols. The need to provide [[precomposed character]]s for the Western European and South American markets required a different character set: Microsoft established the principle of code pages, one for each alphabet. For the [[List of writing systems#Segmental script|segmental scripts]] used in most of Africa, the Americas, southern and south-east Asia, the Middle East and Europe, a character needs just one byte but two or more bytes are needed for the [[ideographic]] sets used in the rest of the world. The code-page model was unable to handle this challenge.
Since the late 1990s, software and systems have adopted [[Unicode]] as their preferred character encoding format: Unicode is designed to handle millions of characters. All current Microsoft products and [[application program interfaces]] use Unicode internally,{{cn|date=October 2020}} but some applications continue to use the default encoding{{clarify|date=October 2024}} of the computer's 'locale' when reading and writing text data to files or standard output.{{cn|date=October 2020}} Therefore, files may still be encountered that are legible and intelligible in one part of the world but unintelligible [[mojibake]] in another.
=== UTF-8, UTF-16 ===
Microsoft adopted a Unicode encoding (first the now-obsolete [[UCS-2]], which was then Unicode's only encoding), i.e. [[UTF-16]] for all its [[operating system]]s from Windows NT onwards, but additionally supports [[UTF-8]] (aka <code>CP_UTF8</code>) since [[Windows 10 version history#Version 1803 (April 2018 Update)|Windows 10 version 1803]].<ref>{{cite web
|url=https://srad.jp/story/17/11/14/0640253/
|title=Windows 10のInsider PreviewでシステムロケールをUTF-8にするオプションが追加される
|trans-title=The option to make UTF-8 the system locale added in Windows 10 Insider Preview
|author=hylom
|website=スラド
|language=ja
|date=2017-11-14
|access-date=2018-05-10
|archive-date=2018-05-11
|archive-url=https://web.archive.org/web/20180511012606/https://srad.jp/story/17/11/14/0640253/
|url-status=live}}</ref>
UTF-16 uniquely encodes all Unicode characters in the [[Basic Multilingual Plane]] (BMP) using 16 bits but the remaining Unicode (e.g. [[emoji]]s) is encoded with a 32-bit (four byte) code{{snd}} while the rest of the industry ([[Unix-like]] systems and the web), and now Microsoft chose [[UTF-8]] (which uses one byte for the 7-bit [[ASCII]] character set, two or three bytes for other characters in the BMP, and four bytes for the remainder).
== List ==
{{Expand_list|date=April 2014}}
The following Windows code pages exist:
<!-- Please add only codepages which are or were actually supported by at least one version of Windows in at least one of its modes -->
=== Windows-125x series ===
These nine code pages are all [[extended ASCII]] 8-bit [[SBCS]] encodings, and were designed by [[Microsoft]] for use as ANSI codepages on Windows. They are commonly known by their IANA-registered<ref name="iana31j">{{cite web
|url=https://www.iana.org/assignments/character-sets/character-sets.xhtml
|publisher=IANA
|title=Character Sets
|access-date=2019-04-07
|archive-date=2016-12-03
|archive-url=https://web.archive.org/web/20161203235506/https://www.iana.org/assignments/character-sets/character-sets.xhtml
|url-status=live }}</ref> names as <code>windows-<number></code>, but are also sometimes called <code>cp<number></code>, "cp" for "code page". They are all used as ANSI code pages; Windows-1258 is also used as an OEM code page.
The Windows-125x series includes nine of the ANSI code pages, and mostly covers scripts from [[Europe]] and [[West Asia]] with the addition of [[Vietnam]]. System encodings for [[Thai script|Thai]] and for [[East Asia]]n languages were numbered to match similar IBM code pages and are used as both ANSI and OEM code pages; these are covered in following sections.
<!--
All of the Windows-125x encodings previously bore the source code comment "Windows 7 Ultimate". However, as the Windows-125x encodings were all designed for Windows and originally used by Windows, it goes without saying that all nine have Windows support.
-->
{| class="wikitable"
! ID !! Description !! Relationship to ISO 8859 or other established encodings
|-
|{{anchor|CP1250}}[[Windows-1250|1250]]<ref name="Microsoft_CP1250">{{cite web|author=Microsoft|title=Windows 1250|url=http://msdn.microsoft.com/en-us/goglobal/cc305143|access-date=2014-07-06|archive-date=2014-07-14|archive-url=https://web.archive.org/web/20140714112927/http://msdn.microsoft.com/en-us/goglobal/cc305143|url-status=live}}</ref><ref name="IBM_CP1250">{{cite web|author=IBM|title=SBCS code page information document CPGID 01250|url=http://www-01.ibm.com/software/globalization/cp/cp01250.html|access-date=2014-07-06|archive-date=2014-07-14|archive-url=https://web.archive.org/web/20140714174544/http://www-01.ibm.com/software/globalization/cp/cp01250.html|url-status=live}}</ref>||[[Latin script|Latin]] 2 / [[Central Europe]]an||{{no2|Similar to [[ISO-8859-2]] but moves several characters, including multiple letters.|align=left}}
|-
|{{anchor|CP1251}}[[Windows-1251|1251]]<ref name="Microsoft_CP1251">{{cite web|author=Microsoft|title=Windows 1251|url=http://msdn.microsoft.com/en-us/goglobal/cc305144|access-date=2014-07-06|archive-date=2014-07-14|archive-url=https://web.archive.org/web/20140714193058/http://msdn.microsoft.com/en-us/goglobal/cc305144|url-status=live}}</ref><ref name="IBM_CP1251">{{cite web|author=IBM|title=SBCS code page information document CPGID 01251|url=http://www-01.ibm.com/software/globalization/cp/cp01251.html|access-date=2014-07-06|archive-date=2014-07-14|archive-url=https://web.archive.org/web/20140714134651/http://www-01.ibm.com/software/globalization/cp/cp01251.html|url-status=live}}</ref>||[[Cyrillic script|Cyrillic]]||{{no|Incompatible with both [[ISO-8859-5]] and [[KOI-8]].|align=left}}
|-
|{{anchor|CP1252}}[[Windows-1252|1252]]<ref name="Microsoft_CP1252">{{cite web|author=Microsoft|title=Windows 1252|url=http://msdn.microsoft.com/en-us/goglobal/cc305145|access-date=2014-07-06|archive-date=2013-05-04|archive-url=https://web.archive.org/web/20130504221024/http://msdn.microsoft.com/en-us/goglobal/cc305145|url-status=live}}</ref><ref name="IBM_CP1252">{{cite web|author=IBM|title=SBCS code page information document CPGID 01252|url=http://www-01.ibm.com/software/globalization/cp/cp01252.html|access-date=2014-07-06|archive-date=2014-07-14|archive-url=https://web.archive.org/web/20140714135559/http://www-01.ibm.com/software/globalization/cp/cp01252.html|url-status=live}}</ref>||Latin 1 / [[Western Europe]]an||{{yes|Superset of [[ISO-8859-1]] (without C1 controls). Letter repertoire accordingly similar to [[code page 850|CP850]].|align=left}}
|-
|{{anchor|CP1253}}[[Windows-1253|1253]]<ref name="Microsoft_CP1253">{{cite web|author=Microsoft|title=Windows 1253|url=http://msdn.microsoft.com/en-us/goglobal/cc305146|access-date=2014-07-06|archive-date=2014-07-14|archive-url=https://web.archive.org/web/20140714120112/http://msdn.microsoft.com/en-us/goglobal/cc305146|url-status=live}}</ref><ref name="IBM_CP1253">{{cite web|author=IBM|title=SBCS code page information document CPGID 01253|url=http://www-01.ibm.com/software/globalization/cp/cp01253.html|access-date=2014-07-06|archive-date=2014-07-14|archive-url=https://web.archive.org/web/20140714173231/http://www-01.ibm.com/software/globalization/cp/cp01253.html|url-status=live}}</ref>||[[Greek alphabet|Greek]]||{{partial|Similar to [[ISO 8859-7]] but moves several characters, including a letter.|align=left}}
|-
|{{anchor|CP1254}}[[Windows-1254|1254]]<ref name="Microsoft_CP1254">{{cite web|author=Microsoft|title=Windows 1254|url=http://msdn.microsoft.com/en-us/goglobal/cc305147|access-date=2014-07-06|archive-date=2014-07-14|archive-url=https://web.archive.org/web/20140714234606/http://msdn.microsoft.com/en-us/goglobal/cc305147|url-status=live}}</ref><ref name="IBM_CP1254">{{cite web|author=IBM|title=SBCS code page information document CPGID 01254|url=http://www-01.ibm.com/software/globalization/cp/cp01254.html|access-date=2014-07-06|archive-date=2014-07-14|archive-url=https://web.archive.org/web/20140714125357/http://www-01.ibm.com/software/globalization/cp/cp01254.html|url-status=live}}</ref>||[[Turkish alphabet|Turkish]]||{{yes|Superset of [[ISO 8859-9]] (without C1 controls).|align=left}}
|-
|{{anchor|CP1255}}[[Windows-1255|1255]]<ref name="Microsoft_CP1255">{{cite web|author=Microsoft|title=Windows 1255|url=http://msdn.microsoft.com/en-us/goglobal/cc305148|access-date=2014-07-06|archive-date=2014-07-14|archive-url=https://web.archive.org/web/20140714233040/http://msdn.microsoft.com/en-us/goglobal/cc305148|url-status=live}}</ref><ref name="IBM_CP1255">{{cite web|author=IBM|title=SBCS code page information document CPGID 01255|url=http://www-01.ibm.com/software/globalization/cp/cp01255.html|access-date=2014-07-06|archive-date=2014-07-14|archive-url=https://web.archive.org/web/20140714183315/http://www-01.ibm.com/software/globalization/cp/cp01255.html|url-status=live}}</ref>||[[Hebrew alphabet|Hebrew]]||{{partial|Almost a superset of [[ISO 8859-8]], but with two incompatible punctuation changes.|align=left}}
|-
|{{anchor|CP1256}}[[Windows-1256|1256]]<ref name="Microsoft_CP1256">{{cite web|author=Microsoft|title=Windows 1256|url=http://msdn.microsoft.com/en-us/goglobal/cc305149|access-date=2014-07-06|archive-date=2014-07-14|archive-url=https://web.archive.org/web/20140714122158/http://msdn.microsoft.com/en-us/goglobal/cc305149|url-status=live}}</ref><ref name="IBM_CP1256">{{cite web|author=IBM|title=SBCS code page information document CPGID 01256|url=http://www-01.ibm.com/software/globalization/cp/cp01256.html|access-date=2014-07-06|archive-date=2014-07-14|archive-url=https://web.archive.org/web/20140714180810/http://www-01.ibm.com/software/globalization/cp/cp01256.html|url-status=live}}</ref>||[[Arabic alphabet|Arabic]]||{{no|Not compatible with [[ISO 8859-6]]; rather, OEM [[Code page 708]] is an [[ISO 8859-6]] (ASMO 708) superset.|align=left}}
|-
|{{anchor|CP1257}}[[Windows-1257|1257]]<ref name="Microsoft_CP1257">{{cite web|author=Microsoft|title=Windows 1257|url=http://msdn.microsoft.com/en-us/goglobal/cc305150|access-date=2014-07-06|archive-date=2013-03-16|archive-url=https://web.archive.org/web/20130316005822/http://msdn.microsoft.com/en-us/goglobal/cc305150|url-status=live}}</ref><ref name="IBM_CP1257">{{cite web|author=IBM|title=SBCS code page information document CPGID 01257|url=http://www-01.ibm.com/software/globalization/cp/cp01257.html|access-date=2014-07-06|archive-date=2014-07-14|archive-url=https://web.archive.org/web/20140714132230/http://www-01.ibm.com/software/globalization/cp/cp01257.html|url-status=live}}</ref>||[[Baltic languages|Baltic]]||{{partial|Not [[ISO 8859-4]]; the later [[ISO 8859-13]] is closely related, but with some differences in available punctuation.|align=left}}
|-
|{{anchor|CP1258}}[[Windows-1258|1258]]<ref name="Microsoft_CP1258">{{cite web|author=Microsoft|title=Windows 1258|url=http://msdn.microsoft.com/en-us/goglobal/cc305151|access-date=2014-07-06|archive-date=2013-10-25|archive-url=https://web.archive.org/web/20131025142227/http://msdn.microsoft.com/en-us/goglobal/cc305151|url-status=live}}</ref><ref name="IBM_CP1258">{{cite web|author=IBM|title=SBCS code page information document CPGID 01258|url=http://www-01.ibm.com/software/globalization/cp/cp01258.html|access-date=2014-07-06|archive-date=2014-07-14|archive-url=https://web.archive.org/web/20140714123221/http://www-01.ibm.com/software/globalization/cp/cp01258.html|url-status=live}}</ref>||[[Vietnamese alphabet|Vietnamese]] (also OEM)||{{no|Not related to [[VSCII]] or [[VISCII]], uses fewer base characters with combining diacritics.|align=left}}
|-
|}
=== DOS code pages ===
These are also ASCII-based. Most of these are included for use as OEM code pages; code page 874 is also used as an ANSI code page.
{{Div col|colwidth=30em}}
* {{anchor|CP437}}[[Code page 437|437]] – IBM PC US, 8-bit [[SBCS]] [[extended ASCII]].<ref name="IBM_CP437">{{cite web|author=IBM|title=SBCS code page information document - CPGID 00437|url=http://www-01.ibm.com/software/globalization/cp/cp00437.html|access-date=2014-07-04|archive-date=2016-06-09|archive-url=https://web.archive.org/web/20160609084933/https://www-01.ibm.com/software/globalization/cp/cp00437.html|url-status=live}}</ref> Known as OEM-US, the encoding of the primary built-in font of VGA graphics cards.<!-- Windows 7 Ultimate --><!-- [[Windows 1.0|1.00]]-[[Windows ME|4.90]] -->
* [[Code page 708|708]] – Arabic, extended [[ISO 8859-6]] (ASMO 708)<!-- Windows 7 Ultimate -->
* 720 – Arabic, retaining box drawing characters in their usual locations<!-- Windows 7 Ultimate -->
* [[Code page 737|737]] – "MS-DOS Greek". Retains all box drawing characters. More popular than 869.<!-- Windows 7 Ultimate -->
* 775 – "MS-DOS Baltic Rim"<!-- Windows 7 Ultimate -->
* [[Code page 850|850]] – "MS-DOS Latin 1". Full (re-arranged) repertoire of [[ISO 8859-1]].<!-- Windows 7 Ultimate -->
* [[Code page 852|852]] – "MS-DOS Latin 2"<!-- Windows 7 Ultimate -->
* 855 – "MS-DOS Cyrillic". Mainly used for [[South Slavic languages]]. Includes (re-arranged) repertoire of [[ISO-8859-5]]. Not to be confused with cp866.<!-- Windows 7 Ultimate -->
* 857 – "MS-DOS Turkish"<!-- Windows 7 Ultimate -->
* [[Code page 858|858]] – Western European with euro sign<!-- Windows 7 Ultimate -->
* 860 – "MS-DOS Portuguese"<!-- Windows 7 Ultimate -->
* [[Code page 861|861]] – "MS-DOS Icelandic"<!-- Windows 7 Ultimate -->
* [[Code page 862|862]] – "MS-DOS Hebrew"<!-- Windows 7 Ultimate -->
* [[Code page 863|863]] – "MS-DOS French Canada"<!-- Windows 7 Ultimate -->
* [[Code page 864|864]] – Arabic<!-- Windows 7 Ultimate -->
* [[Code page 865|865]] – "MS-DOS Nordic"<!-- Windows 7 Ultimate -->
* [[Code page 866|866]] – "MS-DOS Cyrillic Russian", cp866. Sole purely OEM code page (rather than ANSI or both) included as a legacy encoding in WHATWG Encoding Standard for [[HTML5]].<!-- Windows 7 Ultimate -->
* [[Code page 869|869]] – "MS-DOS Greek 2", IBM869. Full (re-arranged) repertoire of [[ISO 8859-7]].<!-- Windows 7 Ultimate -->
* [[Windows-874|874]] – [[Thai alphabet|Thai]], also used as the ANSI code page, extends [[ISO 8859-11]] (and therefore [[TIS-620]]) with a few additional characters from Windows-1252. Corresponds to IBM code page 1162 (IBM-874 is similar but has different extensions).<!-- Windows 7 Ultimate -->
{{Div col end}}
=== East Asian multi-byte code pages ===
These often differ from the IBM code pages of the same number: code pages 932, 949 and 950 only partly match the IBM code pages of the same number, while the number 936 was used by IBM for another Simplified Chinese encoding which is now deprecated and Windows-951, as part of a [[kludge]], is unrelated to IBM-951. IBM equivalent code pages are given in the second column. Code pages 932, 936, 949 and 950/951 are used as both ANSI and OEM code pages on the locales in question.
{|class="wikitable sortable"
!ID!!Language!!Encoding!! data-sort-type="number" |IBM Equivalent!!Difference from IBM CCSID of same number!!Use
|-
|[[Code page 932 (Microsoft Windows)|932]]||[[Japanese writing system|Japanese]]||[[Shift JIS]] (Microsoft variant)||943<ref name="ibm932v943">{{cite web|url=https://www.ibm.com/support/knowledgecenter/en/ssw_aix_71/com.ibm.aix.nlsgdrf/ibm-943_ibm-932.htm|title=IBM-943 and IBM-932|publisher=IBM|work=IBM Knowledge Center|access-date=2020-07-08|archive-date=2018-08-18|archive-url=https://web.archive.org/web/20180818214409/https://www.ibm.com/support/knowledgecenter/en/ssw_aix_71/com.ibm.aix.nlsgdrf/ibm-943_ibm-932.htm|url-status=live }}</ref>||[[IBM-932]] is also Shift JIS, has fewer extensions (but those extensions it has are in common), and swaps some [[variant Chinese characters]] (''itaiji'') for interoperability with earlier editions of [[JIS X 0208|JIS C 6226]].||ANSI/OEM (Japan)<!-- Windows 7 Ultimate -->
|-
|[[Code page 936 (Microsoft Windows)|936]]||[[Simplified Chinese characters|Chinese (simplified)]]||[[GBK (character encoding)|GBK]]||1386||[[Code page 936 (IBM)|IBM-936]] is a different Simplified Chinese encoding with a different encoding method, which has been deprecated since 1993.||ANSI/OEM (PRC, Singapore)<!-- Windows 7 Ultimate -->
|-
|[[Windows-949|949]]||[[Hangul|Korean]]||[[Unified Hangul Code]]||1363||[[Code page 949 (IBM)|IBM-949]] is also an [[EUC-KR]] superset, but with different (colliding) extensions.||ANSI/OEM (Republic of Korea)<!-- Windows 7 Ultimate -->
|-
|[[Code page 950|950]]||[[Traditional Chinese characters|Chinese (traditional)]]||[[Big5]] (Microsoft variant)||1373<ref>{{cite web |url=http://icu-project.org/icu-bin/convexp?conv=ibm-1373_P100-2002 |title=Converter Explorer: ibm-1373_P100-2002 |work=ICU Demonstration |publisher=[[International Components for Unicode]] |access-date=2020-06-27 |archive-date=2021-05-26 |archive-url=https://web.archive.org/web/20210526173749/https://icu4c-demos.unicode.org/icu-bin/convexp?conv=ibm-1373_P100-2002 |url-status=live }}</ref>||IBM-950 is also Big5, but includes a different subset of the ETEN extensions, adds further extensions with an expanded trail byte range, and lacks the Euro.||ANSI/OEM (Taiwan, Hong Kong)<!-- Windows 7 Ultimate -->
|-
|[[Hong Kong Supplementary Character Set#Microsoft Windows|951]]||Chinese (traditional) including [[Cantonese]]||[[Hong Kong Supplementary Character Set|Big5-HKSCS]] (2001 ed.)||5471<ref>{{cite web|archive-url=https://web.archive.org/web/20141129233053/http://www-01.ibm.com/software/globalization/ccsid/ccsid5471.html|archive-date=2014-11-29|url-status=dead|url=http://www-01.ibm.com/software/globalization/ccsid/ccsid5471.html|work=IBM Globalization|publisher=[[IBM]]|title=Coded character set identifiers – CCSID 5471}}</ref>||IBM-951 is the double-byte plane from IBM-949 (see above), and unrelated to Microsoft's internal use of the number 951.||ANSI/OEM (Hong Kong, 98/NT4/2000/XP with HKSCS patch)
|}
[[File:IBM CJK Code Page Numbers.svg|right|thumb|Microsoft code pages for Chinese, Japanese and Korean usually do not correspond exactly, and sometimes do not correspond at all, to the IBM code pages of the same number.]]
A few further multiple-byte code pages are supported for decoding or encoding using operating system libraries, but not used as either sort of system encoding in any locale.
{|class="wikitable sortable"
!ID!!data-sort-type="number"|IBM Equivalent!!Language!!Encoding!!Use
|-
|[[Code page 1361|1361]]||-<!-- 834 would be the CPGID for JOHAB, albeit its non-syllable part is not the KS C 5601-1992 one but the one used with EBCDIC. It has several CCSIDs but these are either DBCS-only or combined with EBCDIC. -->||Korean||[[Johab]] (KS C 5601-1992 annex 3)||Conversion<!-- Windows 7 Ultimate -->
|-
|[[Code page 20000|20000]]||-<!-- 964 is the IBM CCSID for CNS 11643 as EUC-TW, which only matches Windows-20000's encoding method for plane 1 (non-hanzi and level 1 hanzi). Windows appears to put plane 1 in [\xA1-\xFE][\xA1-\xFE] and plane 2 in [\xA1-\xFE][\x21-\x7E], resembling DEC Kanji in encoding method, and omits planes 3 and up (that being said, IBM-964 only includes the two planes, plus user-defined in plane 12 and corporate extensions in plane 13). -->||Chinese (traditional)||An encoding of [[CNS 11643]]<!--"CNS Taiwan; Chinese Traditional (CNS)"-->||Conversion<!-- Windows 7 Ultimate -->
|-
|[[Code page 20001|20001]]||-||Chinese (traditional)||TCA||Conversion<!-- Windows 7 Ultimate -->
|-
|[[Code page 20002|20002]]||-||Chinese (traditional)||Big5 (ETEN variant)||Conversion<!-- Windows 7 Ultimate -->
|-
|[[Code page 20003|20003]]||938||Chinese (traditional)||[[IBM 5550]]||Conversion<!-- Windows 7 Ultimate -->
|-
|[[Code page 20004|20004]]||-||Chinese (traditional)||Teletext||Conversion<!-- Windows 7 Ultimate -->
|-
|[[Code page 20005|20005]]||-||Chinese (traditional)||Wang||Conversion<!-- Windows 7 Ultimate -->
|-
|[[Code page 20932|20932]]||954 (roughly)||Japanese||[[EUC-JP]]||Conversion<!-- Windows 7 Ultimate -->
|-
|[[Code page 20936|20936]]||5479||Chinese (simplified)||[[GB 2312]]||Conversion
|-
|[[Code page 20949|20949]], 51949||970||Korean||Wansung (8-bit with ASCII, i.e. [[EUC-KR]])<ref>{{cite web
|url=https://source.winehq.org/git/wine.git/blob/6f68543692a7588daa581d00c475715395036b15:/tools/make_unicode#l946
|title=dump_krwansung_codepage: build Korean Wansung table from the KSX1001 file
|work=make_unicode: Generate code page .c files from ftp.unicode.org descriptions
|first=Alexandre
|last=Julliard
|date=11 March 2021
|publisher=[[Wine (software)|Wine Project]]
|access-date=2021-03-14
|archive-date=2021-05-26
|archive-url=https://web.archive.org/web/20210526173718/https://source.winehq.org/git/wine.git/blob/6f68543692a7588daa581d00c475715395036b15:/tools/make_unicode#l946
|url-status=live}}</ref>||Conversion
|}
=== EBCDIC code pages ===
{|class="wikitable"
!data-sort-type="number"|ID!!data-sort-type="number"|IBM Equivalent!!Description
|-
|colspan="2"|{{anchor|CP37}}37||[[Country Extended Code Page]] for US, Canada, Netherlands, Portugal, Brazil, Australia, New Zealand<ref name="IBM_CP037">{{cite web|author=IBM|title=SBCS code page information document - CPGID 00037|url=http://www-01.ibm.com/software/globalization/cp/cp00037.html|access-date=2014-07-04|archive-date=2014-07-14|archive-url=https://web.archive.org/web/20140714185507/http://www-01.ibm.com/software/globalization/cp/cp00037.html|url-status=live}}</ref> <!-- Windows 7 Ultimate -->
|-
|colspan="2"|500||Country Extended Code Page for Belgium, Canada and Switzerland<!-- Windows 7 Ultimate -->
|-
|colspan="2"|870||EBCDIC Latin-2<!-- Windows 7 Ultimate -->
|-
|colspan="2"|875||EBCDIC Greek<!-- Windows 7 Ultimate -->
|-
|colspan="2"|1026||EBCDIC Latin-5 (Turkish)<!-- Windows 7 Ultimate -->
|-
|colspan="2"|1047||Country Extended Code Page for Open Systems ([[POSIX]])<!-- Windows 7 Ultimate -->
|-
|colspan="2"|1140||Euro-sign Country Extended Code Page for US, Canada, Netherlands, Portugal, Brazil, Australia, New Zealand<!-- Windows 7 Ultimate -->
|-
|colspan="2"|1141||Euro-sign Country Extended Code Page for Austria and Germany<!-- Windows 7 Ultimate -->
|-
|colspan="2"|1142||Euro-sign Country Extended Code Page for Denmark and Norway<!-- Windows 7 Ultimate -->
|-
|colspan="2"|1143||Euro-sign Country Extended Code Page for Finland and Sweden<!-- Windows 7 Ultimate -->
|-
|colspan="2"|1144||Euro-sign Country Extended Code Page for Italy<!-- Windows 7 Ultimate -->
|-
|colspan="2"|1145||Euro-sign Country Extended Code Page for Spain and Latin America<!-- Windows 7 Ultimate -->
|-
|colspan="2"|1146||Euro-sign Country Extended Code Page for UK<!-- Windows 7 Ultimate -->
|-
|colspan="2"|1147||Euro-sign Country Extended Code Page for France<!-- Windows 7 Ultimate -->
|-
|colspan="2"|1148||Euro-sign Country Extended Code Page for Belgium, Canada and Switzerland<!-- Windows 7 Ultimate -->
|-
|colspan="2"|1149||Euro-sign Country Extended Code Page for Iceland<!-- Windows 7 Ultimate -->
|-
|[[Code page 20273|20273]]||273||Country Extended Code Page for Germany<!-- Windows 7 Ultimate -->
|-
|[[Code page 20277|20277]]||277||Country Extended Code Page for Denmark/Norway<!-- Windows 7 Ultimate -->
|-
|[[Code page 20278|20278]]||278||Country Extended Code Page for Finland/Sweden<!-- Windows 7 Ultimate -->
|-
|[[Code page 20280|20280]]||280||Country Extended Code Page for Italy
|-
|[[Code page 20284|20284]]||284||Country Extended Code Page for Latin America/Spain<!-- Windows 7 Ultimate -->
|-
|[[Code page 20285|20285]]||285||Country Extended Code Page for United Kingdom<!-- Windows 7 Ultimate -->
|-
|[[Code page 20290|20290]]||290||[[Japanese language in EBCDIC|Japanese Katakana EBCDIC]]<!-- Windows 7 Ultimate -->
|-
|[[Code page 20297|20297]]||297||Country Extended Code Page for France<!-- Windows 7 Ultimate -->
|-
|[[Code page 20420|20420]]||420||EBCDIC Arabic<!-- Windows 7 Ultimate -->
|-
|[[Code page 20423|20423]]||423||EBCDIC Greek with Extended Latin<!-- Windows 7 Ultimate -->
|-
|[[Code page 20424|20424]]||424||EBCDIC Hebrew<!-- Windows 7 Ultimate -->
|-
|[[Code page 20833|20833]]||833||Korean EBCDIC for N-Byte Hangul; {{code|x-EBCDIC-KoreanExtended}}<!-- Windows 7 Ultimate -->
|-
|[[Code page 20838|20838]]||838||EBCDIC Thai<!-- Windows 7 Ultimate -->
|-
|[[Code page 20871|20871]]||871||Country Extended Code Page for Iceland<!-- Windows 7 Ultimate -->
|-
|[[Code page 20880|20880]]||880||EBCDIC Cyrillic ([[DKOI]])<!-- Windows 7 Ultimate -->
|-
|[[Code page 20905|20905]]||905||EBCDIC Latin-3 (Maltese, Esperanto and Turkish)<!-- Windows 7 Ultimate -->
|-
|[[Code page 20924|20924]]||924||EBCDIC Latin-9 (including Euro sign) for Open Systems ([[POSIX]])
|-
|[[Code page 21025|21025]]||1025||EBCDIC Cyrillic (DKOI) with [[section sign]]<!-- Windows 7 Ultimate -->
|-
|[[Code page 21027|21027]]||(1027)||Japanese EBCDIC (an incomplete implementation of IBM code page 1027,<ref>{{cite web |url=https://blogs.msdn.microsoft.com/shawnste/2005/09/12/code-page-21027-extendedext-alpha-lowercase/ |last=Steele |first=Shawn |publisher=[[MSDN]] |date=2005-09-12 |title=Code Page 21027 "Extended/Ext Alpha Lowercase" |access-date=2019-04-06 |archive-date=2019-04-06 |archive-url=https://web.archive.org/web/20190406193522/https://blogs.msdn.microsoft.com/shawnste/2005/09/12/code-page-21027-extendedext-alpha-lowercase/ |url-status=live }}</ref> now deprecated)<ref name="Code page identifier list">{{Cite web|url=https://docs.microsoft.com/en-gb/windows/desktop/Intl/code-page-identifiers|title=Code Page Identifiers|website=docs.microsoft.com|access-date=2019-04-07|archive-date=2019-04-07|archive-url=https://web.archive.org/web/20190407185239/https://docs.microsoft.com/en-gb/windows/desktop/Intl/code-page-identifiers|url-status=live}}</ref><!-- Windows 7 Ultimate -->
|}
=== Unicode-related code pages ===
{|class="wikitable"
!data-sort-type="number"|ID!!data-sort-type="number"|IBM Equivalent!!Description
|-
|[[Code page 1200|1200]]||1202, 1203||[[Unicode]] (BMP of ISO 10646, [[UTF-16LE]]). Available only to [[Common Language Infrastructure|managed applications]].<ref name="Code page identifier list"/>
|-
|[[Code page 1201|1201]]||1200, 1201||[[Unicode]] ([[UTF-16BE]]). Available only to managed applications.<ref name="Code page identifier list"/>
|-
|[[Code page 12000|12000]]||1234, 1235||[[UTF-32]]. Available only to managed applications.<ref name="Code page identifier list"/>
|-
|[[Code page 12001|12001]]||1232, 1233||[[UTF-32]]. Big-endian. Available only to managed applications.<ref name="Code page identifier list"/>
|-
|[[Code page 65000|65000]]||-||[[Unicode]] ([[UTF-7]])
|-
|[[Code page 65001|65001]]||1208, 1209||[[Unicode]] ([[UTF-8]])
|}
=== Macintosh compatibility code pages ===
{|class="wikitable"
!data-sort-type="number"|ID!!data-sort-type="number"|IBM Equivalent!!Description
|-
|[[Code page 10000|10000]]||1275||Apple Macintosh Roman<!-- Windows 7 Ultimate -->
|-
|[[Code page 10001|10001]]||-||Apple Macintosh Japanese<!-- Windows 7 Ultimate -->
|-
|[[Code page 10002|10002]]||-||Apple Macintosh Chinese (traditional) (BIG-5)<!-- Windows 7 Ultimate -->
|-
|[[Code page 10003|10003]]||-||Apple Macintosh Korean<!-- Windows 7 Ultimate -->
|-
|[[Code page 10004|10004]]||-||Apple Macintosh Arabic<!-- Windows 7 Ultimate -->
|-
|[[Code page 10005|10005]]||-||Apple Macintosh Hebrew<!-- Windows 7 Ultimate -->
|-
|[[Code page 10006|10006]]||1280||Apple Macintosh Greek<!-- Windows 7 Ultimate -->
|-
|[[Code page 10007|10007]]||1283||Apple Macintosh Cyrillic<!-- Windows 7 Ultimate -->
|-
|[[Code page 10008|10008]]||-||Apple Macintosh Chinese (simplified) (GB 2312)<!-- Windows 7 Ultimate -->
|-
|[[Code page 10010|10010]]||1285||Apple Macintosh Romanian<!-- Windows 7 Ultimate -->
|-
|[[Code page 10017|10017]]||-||Apple Macintosh Ukrainian<!-- Windows 7 Ultimate -->
|-
|[[Code page 10021|10021]]||-||Apple Macintosh Thai<!-- Windows 7 Ultimate -->
|-
|[[Code page 10029|10029]]||1282||Apple Macintosh Roman II / Central Europe<!-- Windows 7 Ultimate -->
|-
|[[Code page 10079|10079]]||1286||Apple Macintosh Icelandic<!-- Windows 7 Ultimate -->
|-
|[[Code page 10081|10081]]||1281||Apple Macintosh Turkish<!-- Windows 7 Ultimate -->
|-
|[[Code page 10082|10082]]||1284||Apple Macintosh Croatian<!-- Windows 7 Ultimate -->
|}
=== ISO 8859 code pages ===
{|class="wikitable"
!data-sort-type="number"|ID!!data-sort-type="number"|IBM Equivalent!!Description
|-
|[[Code page 28591|28591]]||819, 5100||[[ISO-8859-1]] – Latin-1<!-- Windows 7 Ultimate -->
|-
|[[Code page 28592|28592]]||912||[[ISO-8859-2]] – Latin-2<!-- Windows 7 Ultimate -->
|-
|[[Code page 28593|28593]]||913||[[ISO-8859-3]] – Latin-3 or South European<!-- Windows 7 Ultimate -->
|-
|[[Code page 28594|28594]]||914||[[ISO-8859-4]] – Latin-4 or North European<!-- Windows 7 Ultimate -->
|-
|[[Code page 28595|28595]]||915||[[ISO-8859-5]] – Latin/Cyrillic<!-- Windows 7 Ultimate -->
|-
|[[Code page 28596|28596]]||-||[[ISO-8859-6]] – Latin/Arabic<!-- Windows 7 Ultimate -->
|-
|[[Code page 28597|28597]]||813, 4909, 9005||[[ISO-8859-7]] – Latin/Greek<!-- Windows 7 Ultimate --> (1987 edition, i.e. without [[euro sign]], [[Modern drachma|drachma sign]] or [[iota subscript]])<ref name="encodings_rs">{{cite web |url=https://docs.rs/encoding_rs/latest/encoding_rs/#relationship-with-windows-code-pages |title=Relationship with Windows Code Pages |work=Crate encoding_rs |publisher=Docs.rs |author=Mozilla Foundation |author-link=Mozilla Foundation}}</ref>
|-
|[[Code page 28598|28598]]||-||[[ISO-8859-8]] – Latin/Hebrew<!-- Windows 7 Ultimate --> (visual order; 1988 edition, i.e. without {{ctrl|LRM}} and {{ctrl|RLM}})<ref name="encodings_rs"/>
|-
|[[Code page 28599|28599]]||920||[[ISO-8859-9]] – Latin-5 or Turkish<!-- Windows 7 Ultimate -->
|-
|[[Code page 28600|28600]]||919||[[ISO-8859-10]] – Latin-6 or Nordic
|-
|[[Code page 28601|28601]]||-||[[ISO-8859-11]] – Latin/Thai
|-
|[[Code page 28602|28602]]||-||[[ISO-8859-12]] – ''reserved for Latin/Devanagari but abandoned'' (not supported)<!-- not supported by Windows -->
|-
|[[Code page 28603|28603]]||921||[[ISO-8859-13]] – Latin-7 or Baltic Rim<!-- Windows 7 Ultimate -->
|-
|[[Code page 28604|28604]]||-||[[ISO-8859-14]] – Latin-8 or Celtic
|-
|[[Code page 28605|28605]]||923||[[ISO-8859-15]] – Latin-9<!-- Windows 7 Ultimate -->
|-
|[[Code page 28606|28606]]||-||[[ISO-8859-16]] – Latin-10 or South-Eastern European
|-
|[[Code page 38596|38596]]||1089||[[ISO-8859-6|ISO-8859-6-{{serif|I}}]] – Latin/Arabic (logical bidirectional order)
|-
|[[Code page 38598|38598]]||916, 5012||[[ISO-8859-8-I|ISO-8859-8-{{serif|I}}]] – Latin/Hebrew (logical bidirectional order; 1988 edition, i.e. without {{ctrl|LRM}} and {{ctrl|RLM}})<ref name="encodings_rs"/>
|}
=== ITU-T code pages ===
{|class="wikitable"
!data-sort-type="number"|ID!!data-sort-type="number"|IBM Equivalent!!Description
|-
|[[Code page 20105|20105]]||1009||7-bit [[ITU T.50|IA5]] [[ISO-646-IRV|IRV]] (Western European)<ref name="MS_2014_CP201xx">{{cite web |title=Code Page Identifiers |publisher=[[Microsoft]] |work=[[Microsoft Developer Network]] |date=2014 |url=https://msdn.microsoft.com/de-de/en-en/library/windows/desktop/dd317756(v=vs.85).aspx |access-date=2016-06-19 |url-status=live |archive-url=https://web.archive.org/web/20160619132819/https://msdn.microsoft.com/de-de/en-en/library/windows/desktop/dd317756(v=vs.85).aspx |archive-date=2016-06-19}}</ref><ref name="WG_CP201xx">{{cite web |title=Web Encodings - Internet Explorer - Encodings |date=2012-10-23 |work=WHATWG Wiki |url=https://wiki.whatwg.org/wiki/Web_Encodings#Encodings_3 |access-date=2016-06-20 |url-status=live |archive-url=https://web.archive.org/web/20160620184648/https://wiki.whatwg.org/wiki/Web_Encodings#Encodings_3 |archive-date=2016-06-20}}</ref><ref name="WU_CP20105">{{cite web |title=Western European (IA5) encoding - Windows charsets |author-first=Antonin |author-last=Foller |date=2014 |orig-year=2011 |work=WUtils.com - Online web utility and help |publisher=Motobit Software |url=http://wutils.com/encodings/x-ia5 |access-date=2016-06-20 |url-status=live |archive-url=https://web.archive.org/web/20160620183843/http://wutils.com/encodings/x-ia5 |archive-date=2016-06-20}}</ref><!-- Windows 7 Ultimate, x-IA5 -->
|-
|[[Code page 20106|20106]]||1011||7-bit [[ITU T.50|IA5]] German (DIN 66003)<ref name="MS_2014_CP201xx"/><ref name="WG_CP201xx"/><ref name="WU_CP20106">{{cite web |title=German (IA5) encoding – Windows charsets |author-first=Antonin |author-last=Foller |date=2014 |orig-year=2011 |work=WUtils.com – Online web utility and help |publisher=Motobit Software |url=http://wutils.com/encodings/x-ia5-german |access-date=2016-06-20 |url-status=live |archive-url=https://web.archive.org/web/20160620183739/http://wutils.com/encodings/x-ia5-german |archive-date=2016-06-20}}</ref><!-- Windows 7 Ultimate, x-IA5-German -->
|-
|[[Code page 20107|20107]]||1018||7-bit [[ITU T.50|IA5]] Swedish (SEN 850200 C)<ref name="MS_2014_CP201xx"/><ref name="WG_CP201xx"/><ref name="WU_CP20107">{{cite web |title=Swedish (IA5) encoding - Windows charsets |author-first=Antonin |author-last=Foller |date=2014 |orig-year=2011 |work=WUtils.com - Online web utility and help |publisher=Motobit Software |url=http://wutils.com/encodings/x-ia5-swedish |access-date=2016-06-20 |url-status=live |archive-url=https://web.archive.org/web/20160620183231/http://wutils.com/encodings/x-ia5-swedish |archive-date=2016-06-20}}</ref><!-- Windows 7 Ultimate, x-IA5-Swedish -->
|-
|[[Code page 20108|20108]]||1016||7-bit [[ITU T.50|IA5]] Norwegian (NS 4551-2)<ref name="MS_2014_CP201xx"/><ref name="WG_CP201xx"/><ref name="WU_CP20108">{{cite web |title=Norwegian (IA5) encoding - Windows charsets |author-first=Antonin |author-last=Foller |date=2014 |orig-year=2011 |work=WUtils.com - Online web utility and help |publisher=Motobit Software |url=http://wutils.com/encodings/x-ia5-norwegian |access-date=2016-06-20 |url-status=live |archive-url=https://web.archive.org/web/20160620183449/http://wutils.com/encodings/x-ia5-norwegian |archive-date=2016-06-20}}</ref><!-- Windows 7 Ultimate, x-IA5-Norwegian -->
|-
|[[Code page 20127|20127]]||367||7-bit [[ASCII]]<ref name="MS_2014_CP201xx"/><ref name="WG_CP201xx"/><ref name="WU_CP20127">{{cite web |title=US-ASCII encoding - Windows charsets |author-first=Antonin |author-last=Foller |date=2014 |orig-year=2011 |work=WUtils.com - Online web utility and help |publisher=Motobit Software |url=http://wutils.com/encodings/us-ascii |access-date=2016-06-20 |url-status=live |archive-url=https://web.archive.org/web/20160620192058/http://wutils.com/encodings/us-ascii |archive-date=2016-06-20}}</ref><!-- Windows 7 Ultimate -->
|-
|[[Code page 20261|20261]]||1036||T.61 (T.61-8bit)<!-- Windows 7 Ultimate -->
|-
|[[Code page 20269|20269]]||?||ISO-6937<!-- Windows 7 Ultimate -->
|}
=== KOI8 code pages ===
{|class="wikitable"
!data-sort-type="number"|ID!!data-sort-type="number"|IBM Equivalent!!Description
|-
|[[Code page 20866|20866]]||878||Russian – KOI8-R<!-- Windows 7 Ultimate -->
|-
||[[Code page 21866|21866]]||1167, 1168||Ukrainian – KOI8-U (or [[KOI8-RU]] in some versions)<ref>{{cite web |title=Review of 8-bit Cyrillic encodings universe |author-first=Valentin |author-last=Nechayev |date=2013 |orig-year=2001 |url=http://segfault.kiev.ua/cyrillic-encodings/ |access-date=2016-12-05 |url-status=live |archive-url=https://web.archive.org/web/20161205134629/http://segfault.kiev.ua/cyrillic-encodings/ |archive-date=2016-12-05}}</ref><!-- Windows 7 Ultimate -->
|}
== Problems arising from the use of code pages ==
Microsoft strongly recommends using Unicode in modern applications, but many applications or data files still depend on the legacy code pages.
* Programs need to know what code page to use in order to display the contents of (pre-Unicode) files correctly. If a program uses the wrong code page it may show text as [[mojibake]].
* The code page in use may differ between machines, so (pre-Unicode) files created on one machine may be unreadable on another.
* Data is often improperly tagged with the code page, or not tagged at all, making determination of the correct code page to read the data difficult.
* These Microsoft code pages differ to various degrees from some of the standards and other vendors' implementations. This isn't a Microsoft issue ''per se'', as it happens to all vendors, but the lack of consistency makes interoperability with other systems unreliable in some cases.
* The use of code pages limits the set of characters that may be used.
* Characters expressed in an unsupported code page may be converted to question marks (?) or other [[replacement character]]s, or to a simpler version (such as removing accents from a letter). In either case, the original character may be lost.
==References==
{{reflist}}
==External links==
* [https://web.archive.org/web/20171015144140/https://www.microsoft.com/resources/msdn/goglobal/default.mspx National Language Support (NLS) API Reference]. Table showing ANSI and OEM codepages per language (from web-archive since Microsoft removed the original page)
* [https://www.iana.org/assignments/charset-reg IANA Charset Name Registrations]
* [https://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS Unicode mapping table for Windows code pages]
* [https://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WindowsBestFit Unicode mappings of windows code pages with "best fit"]
{{character encoding}}
[[Category:Windows code pages| ]]
| |||