I noticed that Microsoft/Bing Translator API does not list the languages and associated language codes that need to be used in the API calls anywhere in their documentation. There is a function that gives you this list but wouldn’t it be easier to just list it somewhere? Language codes match the ISO 639-1 language list except the CHS/CHT distinction for Simplified Chinese and Traditional Chinese.
Microsoft Bing Translate API supported ISO 639-1 Language Codes
Here is a list of all supported Microsoft Bing Translate Language Codes and Language Names:
| API Language Code | Language Name | Native Language Name |
| ar | Arabic | العربية |
| cs | Czech | česky, čeština |
| da | Danish | dansk |
| de | German | Deutsch |
| en | English | English |
| et | Estonian | eesti, eesti keel |
| fi | Finnish | suomi, suomen kieli |
| fr | French | français |
| nl | Dutch | Nederlands, Vlaams |
| el | Greek | Ελληνικά |
| he | Hebrew | עברית |
| ht | Haitian Creole | Kreyòl ayisyen |
| hu | Hungarian | Magyar |
| id | Indonesian | Bahasa Indonesia |
| it | Italian | Italiano |
| ja | Japanese | 日本語 |
| ko | Korean | 한국어 |
| lt | Lithuanian | lietuvių kalba |
| lv | Latvian | latviešu valoda |
| no | Norwegian | Norsk |
| pl | Polish | polski |
| pt | Portuguese | Português |
| ro | Romanian | română |
| es | Spanish | español |
| ru | Russian | русский язык |
| sk | Slovak | slovenčina |
| sl | Slovene | slovenščina |
| sv | Swedish | svenska |
| th | Thai | ไทย |
| tr | Turkish | Türkçe |
| uk | Ukrainian | українська |
| vi | Vietnamese | Tiếng Việt |
| zh-CHS | Simplified Chinese | 中文 |
| zh-CHT | Traditional Chinese |
