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Languages supported

The DeepL API supports the following languages. We will update this list as we introduce new languages.

Please note that Hebrew and Vietnamese have not been added to the /languages endpoint as they are only available in the Pro v2 API using next-gen models. When these languages are available for all accounts and models they will be added to the /languages endpoint and this note will be removed.

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

  • HE - Hebrew (Pro v2 API, next-gen models only)

  • 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

  • VI - Vietnamese (Pro v2 API, next-gen models only)

  • 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

  • HE - Hebrew (Pro v2 API, next-gen models only)

  • 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

  • VI - Vietnamese (Pro v2 API, next-gen models only)

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

  • ZH-HANS - Chinese (simplified)

  • ZH-HANT - Chinese (traditional)

As of April 2025, supported languages for text improvement (DeepL API for Write) have not yet been added to the /languages endpoint; we'll be extending the /languages endpoint in the near future to include this information.

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)

For the /write endpoint, writing_style and tone currently work in DE, EN-GB, and EN-US.

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