Supported languages

These are the languages supported by the DeepL API.

Please note that Arabic and Chinese (traditional) have not yet been added to the /languages endpoint because these languages do not yet support document translation; only text translation is supported for Arabic and Chinese (traditional) at this time. When document translation support is added for these languages, we will a) remove this note and b) add the languages to the /languages endpoint where appropriate.

Supported languages for text improvement (DeepL API for Write) have also not yet been added to the /languages endpoint.

Translation source languages

• AR - Arabic

• BG - Bulgarian

• CS - Czech

• DA - Danish

• DE - German

• EL - Greek

• EN - English (all English variants)

• ES - Spanish

• ET - Estonian

• FI - Finnish

• FR - French

• HU - Hungarian

• ID - Indonesian

• IT - Italian

• JA - Japanese

• KO - Korean

• LT - Lithuanian

• LV - Latvian

• NB - Norwegian Bokmål

• NL - Dutch

• PL - Polish

• PT - Portuguese (all Portuguese variants)

• RO - Romanian

• RU - Russian

• SK - Slovak

• SL - Slovenian

• SV - Swedish

• TR - Turkish

• UK - Ukrainian

• ZH - Chinese (all Chinese variants)

Translation target languages

• AR - Arabic

• BG - Bulgarian

• CS - Czech

• DA - Danish

• DE - German

• EL - Greek

• EN - English (unspecified variant for backward compatibility; please select EN-GB or EN-US instead)

• EN-GB - English (British)

• EN-US - English (American)

• ES - Spanish

• ET - Estonian

• FI - Finnish

• FR - French

• HU - Hungarian

• ID - Indonesian

• IT - Italian

• JA - Japanese

• KO - Korean

• LT - Lithuanian

• LV - Latvian

• NB - Norwegian Bokmål

• NL - Dutch

• PL - Polish

• PT - Portuguese (unspecified variant for backward compatibility; please select PT-BR or PT-PT instead)

• PT-BR - Portuguese (Brazilian)

• PT-PT - Portuguese (all Portuguese variants excluding Brazilian Portuguese)

• RO - Romanian

• RU - Russian

• SK - Slovak

• SL - Slovenian

• SV - Swedish

• TR - Turkish

• UK - Ukrainian

• ZH - Chinese (unspecified variant for backward compatibility; please select ZH-HANS or ZH-HANT instead)

• ZH-HANS - Chinese (simplified)

• ZH-HANT - Chinese (traditional)

Text improvement languages (DeepL API for Write)

• DE (German)

• EN-GB (British English)

• EN-US (American English)

• ES (Spanish)

• FR (French)

• IT (Italian)

• PT-BR (Brazilian Portuguese)

• PT-PT (Portuguese)

Note that writing_style and tone are currently supported the following languages:

• DE

• EN-GB

• EN-US