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1 Raw data. Click on the results to see the raw IANA data for a subtag.
2 Find. The description is the name of the subtag, ie. the language, region, etc. You can search on any part of a description (eg. eng gives results that include Bengali, English and Tengwar). Note that some languages may be spelled differently, eg. Panjabi yields three results, but Punjabi only one.
3 Look up. Looks up all forms of all subtags in the list, eg. it returns a language and extlang subtag for cmn. Subtags can be separated by commas, semicolons, hyphens, or spaces, eg. en; fr, ca, Bali-1901.
Only exact matches of subtags are returned, ie. ak doesn't match akk.
If there is no output for a tag, it was not a valid tag in the registry.
4 Check. Looks up all subtags in a language tag (ie. a hyphen-separated list of subtags) and reports problems, if there are any, eg. de-419-DE-alt and ms-cmn.
Warnings are also displayed to guide you in language choices. Example: ms-min-Latn.
If no errors or warnings are reported, the language tag should be ok, though there may be some rare corner cases that are not detected.
5 
provides links from language subtag entries to the SIL Ethnologue. This is useful when trying to find a language. If there is no page for a given language tag, such as nn, click on the result to reveal the full record; if there is a macrolanguage specified, eg. 'no', that will probably yield an ethnologue entry.
6 
provides links from script subtag entries to the most relevant Unicode script block in UniView.
In some cases, there are additional Unicode areas dedicated to the same script. These can usually be easily found alongside the current block in UniView's pull-down control.
Some very large blocks such as Han, Hangul and Egyptian Hieroglyphs are not linked to. Other scripts do not yet have Unicode blocks.
7 Grandfathered tags are pre-RFC 4646 registrations of tags that cannot be completely composed from the subtags in the current registry. If you search for a grandfathered tag it will be displayed in the results, and the subtags that are in the current registry will also be shown.
8 Redundant tags are pre-RFC 4646 registrations of tags that can now be formed by combining separate subtags from the current registry. They do not show up in search results.
9 Extension subtags are not supported in this version of the lookup tool.
BCP 47 language tags are built from subtags in the IANA Subtag Registry. This tool helps you find or look up subtags and check for errors in language tags.
Read Choosing a Language Tag for step-by-step guidelines on creating language tags. This tool also provides information to guide your choices.
ar
Arabic
ar is a macrolanguage that encompasses the following more specific primary language subtags: aao abh abv acm acq acw acx acy adf aeb aec afb ajp apc apd arb arq ars ary arz auz avl ayh ayl ayn ayp bbz pga shu ssh. If it doesn't break legacy usage for your application, you should use one of these more specific language subtags instead. On the other hand, ar is often preferred by legacy applications rather than arb (Standard Arabic). aao
Algerian Saharan Arabic
abh
Tajiki Arabic
abv
Baharna Arabic
acm
Mesopotamian Arabic
acq
Ta'izzi-Adeni Arabic
acw
Hijazi Arabic
acx
Omani Arabic
acy
Cypriot Arabic
adf
Dhofari Arabic
aeb
Tunisian Arabic
aec
Saidi Arabic
afb
Gulf Arabic
ajp
South Levantine Arabic
ajt
Judeo-Tunisian Arabic
aju
Judeo-Moroccan Arabic
In some legacy applications the macrolanguage subtag jrb (Judeo-Arabic) may be a better choice than aju if you want your language tag to be recognised. apc
North Levantine Arabic
apd
Sudanese Arabic
arb
Standard Arabic
In some legacy applications the macrolanguage subtag ar (Arabic) may be a better choice than arb if you want your language tag to be recognised. arq
Algerian Arabic
ars
Najdi Arabic
ary
Moroccan Arabic
arz
Egyptian Arabic
auz
Uzbeki Arabic
avl
Eastern Egyptian Bedawi Arabic
ayh
Hadrami Arabic
ayl
Libyan Arabic
ayn
Sanaani Arabic
ayp
North Mesopotamian Arabic
bbz
Babalia Creole Arabic
jrb
Judeo-Arabic
jrb is a macrolanguage that encompasses the following more specific primary language subtags: ajt aju jye yhd yud. If it doesn't break legacy usage for your application, you should use one of these more specific language subtags instead. On the other hand, jrb is often preferred by legacy applications rather than aju (Moroccan Judeo-Arabic). jye
Judeo-Yemeni Arabic
mxi
Mozarabic
pga
Sudanese Creole Arabic
shu
Chadian Arabic
sqr
Siculo Arabic
ssh
Shihhi Arabic
xaa
Andalusian Arabic
yhd
Judeo-Iraqi Arabic
yud
Judeo-Tripolitanian Arabic
For use with the ar primary language subtag, ie. as the sequence ar-aao. However it is usually preferable to replace that sequence with just the aao primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-abh. However it is usually preferable to replace that sequence with just the abh primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-abv. However it is usually preferable to replace that sequence with just the abv primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-acm. However it is usually preferable to replace that sequence with just the acm primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-acq. However it is usually preferable to replace that sequence with just the acq primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-acw. However it is usually preferable to replace that sequence with just the acw primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-acx. However it is usually preferable to replace that sequence with just the acx primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-acy. However it is usually preferable to replace that sequence with just the acy primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-adf. However it is usually preferable to replace that sequence with just the adf primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-aeb. However it is usually preferable to replace that sequence with just the aeb primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-aec. However it is usually preferable to replace that sequence with just the aec primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-afb. However it is usually preferable to replace that sequence with just the afb primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-ajp. However it is usually preferable to replace that sequence with just the ajp primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-apc. However it is usually preferable to replace that sequence with just the apc primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-apd. However it is usually preferable to replace that sequence with just the apd primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-arb. However it is usually preferable to replace that sequence with just the arb primary language subtag. On the other hand, the primary language subtag ar is often preferred by legacy applications for Standard Arabic, rather than arb or ar-arb. For use with the ar primary language subtag, ie. as the sequence ar-arq. However it is usually preferable to replace that sequence with just the arq primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-ars. However it is usually preferable to replace that sequence with just the ars primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-ary. However it is usually preferable to replace that sequence with just the ary primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-arz. However it is usually preferable to replace that sequence with just the arz primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-auz. However it is usually preferable to replace that sequence with just the auz primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-avl. However it is usually preferable to replace that sequence with just the avl primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-ayh. However it is usually preferable to replace that sequence with just the ayh primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-ayl. However it is usually preferable to replace that sequence with just the ayl primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-ayn. However it is usually preferable to replace that sequence with just the ayn primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-ayp. However it is usually preferable to replace that sequence with just the ayp primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-bbz. However it is usually preferable to replace that sequence with just the bbz primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-pga. However it is usually preferable to replace that sequence with just the pga primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-shu. However it is usually preferable to replace that sequence with just the shu primary language subtag. For use with the ar primary language subtag, ie. as the sequence ar-ssh. However it is usually preferable to replace that sequence with just the ssh primary language subtag. Arab
Arabic
This version has been updated to support the approximately 7800 new subtags, including extlang subtags, introduced in July 2009, and the tool now provides help in choosing subtags and a tag checker based on RFC 5646. Please report any bugs to me.
Currently supports the IANA Subtag registry of 2010-06-30. The tool currently reports subtags for 7,843 languages, 225 extlangs, 145 scripts, 296 regions, 46 variants, and 26 grandfathered subtags.
Web app created 1 April 2007. Last update 2010-07-01 19:50 GMT
Copyright © 2007-2010 Richard Ishida.