SharePoint supported languages, language cultures and locale ids
Language Name Culture Name Locale ID Arabic ar-sa 1025 Bulgarian bg-bg 1026 Catalan ca-es 1027 Chinese (Simplified) zh-cn 2052 Chinese (Traditional, Taiwan) zh-tw 1028 Croatian hr-hr 1050 Czech cs-cz 1029 Danish da-dk 1030 Dutch nl-nl 1043 English en-us 1033 Estonian et-ee 1061 Finnish fi-fi 1035 French fr-fr 1036 German de-de 1031 Greek el-gr 1032 Hebrew he-il 1037 Hindi hi-in 1081 Hungarian hu-hu 1038 Italian it-it 1040 Japanese ja-jp 1041 Kazakh kk-kz 1087 Korean ko-kr 1042 Latvian lv-lv 1062 Lithuanian lt-lt 1063 Norwegian (Bokmål) nb-no 1044 Polish pl-pl 1045 Portuguese (Brazil) pt-br 1046 Portuguese (Portugal) pt-pt 2070 Romanian ro-ro 1048 Russian ru-ru 1049 Serbian (Latin) sr-latn-cs 2074 Slovak sk-sk 1051 Slovenian sl-si 1060 Spanish es-es 3082 Swedish sv-se 1053 Thai th-th 1054 Turkish tr-tr