Unlike the International Phonetic Alphabet (IPA) notational standard which concentrates on accurately and uniquely transcribing the phonemes of a language, the UPA is also used to denote the functional categories of a language, as well as their phonetic quality. For this reason, it is not possible to automatically convert a UPA transcription into an IPA one.
The basic UPA characters are based on the Finnish alphabet where possible, with extensions taken from Cyrillic and Greek orthographies. Small-capital letters and some novel diacritics are also used.
| Palatal | Central | Velar | ||||
| Close |
| |||||
| Near-close | ||||||
| Close-mid | ||||||
| Mid | ||||||
| Open-mid | ||||||
| Near-open | ||||||
| Open | ||||||
Other vowels are denoted using diacritics; see the section below.
The UPA also uses three characters to denote a vowel of uncertain quality:
| Stop | Fricative | Lateral | Trill | Nasal | Click | |||||||||||||
| Bilabial | ||||||||||||||||||
| Labiodental | ||||||||||||||||||
| Dental | ||||||||||||||||||
| Alveolar | ||||||||||||||||||
| Dentipalatal (palatalised) | ||||||||||||||||||
| Prepalatal (palatalised and/or anterior) | ||||||||||||||||||
| Velar | ||||||||||||||||||
| Postvelar | ||||||||||||||||||
| Uvular | ||||||||||||||||||
When there are two or more consonants in a column, the rightmost one is voiced; when there are three, the centre one is partially devoiced.
| Character | Unicode | Image | Description | Use |
|---|---|---|---|---|
| ạ | 0323 | dot below | Palatal variant of vowel | |
| a̮ | U+032F | breve below | Velar variant of a vowel | |
| ā | U+0304 | macron | Long form of a vowel; also by duplication | |
| a͔ | U+0354 | left arrowhead below | Advanced form of a vowel or consonant | |
| a͕ | U+0355 | right arrowhead below | Retracted form of a vowel or consonant | |
| a̭ | U+032D | circumflex below | Raised variant of a vowel | |
| a̬ | U+032C | caron below | Lowered variant of a vowel | |
| ă | U+0306 | breve | Shorter or reduced vowel | |
| a̯ | U+032F | inverted breve below | Non-syllabic, glide or semi-vowel | |
| ʀ | — | small capital | Unvoiced or partially voiced version of voiced sound | |
| i | — | superscripted character | Very short sound | |
| ə | — | subscripted character | Coarticulation due to surrounding sounds | |
| ᴞ | — | Rotated (180°) or sideways (−90°) | Reduced form of sound |
| English | Language | UPA | IPA |
|---|---|---|---|
| ship | English | ʃɪp | |
| ran | English | ræn | |
| bored | English | boːd/boɹd (depends on accent) | |
| I sow | Moksha | ? |