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man pages section 7: Standards, Environments, Macros, Character Sets, and Miscellany

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Updated: Wednesday, January 24, 2018

iconv_zh_TW (7)


iconv_zh_TW - codeset conversion for Traditional Chinese encodings


The table below provides basic information on the available Traditional Chinese codeset code conversions.

The listed names in the table are canonical names. There are aliases that are also supported for zh_TW.big5, BIG_5, and BIG5. For the supported aliases, please refer to the output of the iconv -l command.


Traditional Chinese multibyte codeset using US-ASCII as the single byte codeset and BIG5 character as two-byte codeset.


Traditional Chinese multibyte codeset using US-ASCII as the single byte codeset and BIG5+ character as two-byte codeset.


Traditional Chinese Unix Code representation based on CNS 11643. Can represent US-ASCII as the single byte codeset and CNS 11643 as two-byte and four-byte codeset.


IBM EBCDIC mixed multibyte code page for Traditional Chinese.


Windows code page 950 of the standard BIG5. Difference between MS-950 and BIG5 is incorporation of some ETEN characters, box drawing characters, and block elements.

For any characters that exist and are valid in a fromcode that do not exist in a tocode of any of the above codesets, each of such characters will be converted into ? (0x3f) as a non-identical code conversion. If the tocode is a Unicode encoding, U+FFFD (replacement character) will be used instead.



iconv conversion modules


cconv code conversion binary tables for iconv(1), cconv (3C) , and iconv(3C)

See Also

geniconvtbl(1), geniconvtbl(1), iconv(1), cconv (3C) , cconv_close (3C) , cconv_open (3C) , cconvctl (3C) , iconv(3C), iconv_close(3C), iconv_open(3C), iconvctl(3C), alias (5) , geniconvtbl-cconv (5) , iconv_extra (7) , iconv_ja (7) , iconv_ko (7) , iconv_unicode (7) , iconv_zh (7) , iconv_zh_HK (7)

Unicode Standard Annex #38

Unicode Han Database (Unihan)

Unicode Standard Annex #38


Available iconv and cconv code conversions related to Traditional Chinese codesets and their aliases can be obtained by running the iconv -l as described in the iconv(1) manual page.

The cconv code conversions related to the Traditional Chinese codesets listed here also support the following variations based on the Unihan database:

level 1: kSimplifiedVariant
level 2: kTraditionalVariant
level 3: kSemanticVariant
level 4: kZVariant
level 5: kCompatibilityVariant
level 6: kSpecializedSemanticVariant