Currently supported languages for relative formatter are (in long form):
- Northern Sami
- Persian
- Turkmen
- Faroese
- Friulian
- Hebrew
- Polish
- Romanian
- Chinese (Simplified, Singapore)
- Bangla
- Indonesian
- Northern Sami (Finland)
- Slovak
- Uyghur
- Urdu (India)
- Danish
- Walser
- Lao
- Norwegian Nynorsk
- Sinhala
- Portuguese
- Mazanderani
- Kalaallisut
- Spanish (Argentina)
- Bulgarian
- Lower Sorbian
- Scottish Gaelic
- Telugu
- Punjabi
- Pashto
- Nepali
- Albanian
- Estonian
- Welsh
- Konkani
- Colognian
- Lakota
- Malay
- Chinese (Simplified, Macau China)
- Bosnian
- Swahili
- Sakha
- Filipino
- Icelandic
- Finnish
- Tigrinya
- Ngomba
- English
- Slovenian
- Ewe
- Spanish
- Serbian (Latin)
- Khmer
- Japanese
- Turkish
- Sindhi
- Kannada
- Kazakh
- Arabic (United Arab Emirates)
- Uzbek
- Western Frisian
- Cantonese (Simplified)
- German
- Korean
- Lithuanian
- Tongan
- Kyrgyz
- French (Canada)
- Odia
- Belarusian
- Mongolian
- Tamil
- Bosnian (Cyrillic)
- Basque
- Chinese (Simplified, Hong Kong China)
- Chinese (Traditional, Hong Kong China)
- Gujarati
- Galician
- Ukrainian
- Greek
- Spanish (United States)
- Spanish (Mexico)
- Malayalam
- Vietnamese
- Maltese
- Chinese (Traditional)
- Italian
- Croatian
- Assamese
- Latvian
- Chinese
- Urdu
- Catalan
- Czech
- Spanish (Paraguay)
- Norwegian Bokmål
- Burmese
- Uzbek (Cyrillic)
- Amharic
- Afrikaans
- Hungarian
- Breton
- Kabuverdianu
- Luxembourgish
- Russian
- Cantonese (Traditional)
- Marathi
- Irish
- Swedish
- Thai
- Armenian
- Zulu
- Georgian
- Macedonian
- Dzongkha
- Dutch
- Yiddish
- Hindi
- Arabic
- French
- Upper Sorbian