SharePoint 2010: Language Pack ID Numbers
Just a quick reference post to keep track of the Language Pack IDs for SharePoint. Please also check here for SharePoint 2013: http://technet.microsoft.com/en-us/library/ff463597.aspx
Language
Language ID
Arabic
1025
Basque
1069
Bulgarian
1026
Catalan
1027
Chinese (Simplified)
2052
Chinese (Traditional)
1028
Croatian
1050
Czech
1029
Danish
1030
Dutch
1043
English
1033
Estonian
1061
Finnish
1035
French
1036
Galician
1110
German
1031
Greek
1032
Hebrew
1037
Hindi
1081
Hungarian
1038
Italian
1040
Japanese
1041
Kazakh
1087
Korean
1042
Latvian
1062
Lithuanian
1063
Norwegian (Bokmål)
1044
Polish
1045
Portuguese (Brazil)
1046
Portuguese (Portugal)
2070
Romanian
1048
Russian
1049
Serbian (Latin)
2074
Slovak
1051
Slovenian
1060
Spanish
3082
Swedish
1053
Thai
1054
Turkish
1055
Ukrainian
1058