This tool converts common English words into International Phonetic Alphabet (IPA) notation, the standard system linguists, voice coaches, and language teachers use to write down exactly how words sound, independently of any particular spelling system. It is useful for language learners, singers, voice actors, ESL teachers, and anyone curious about English pronunciation.
Why IPA matters for English
English spelling is notoriously irregular. The letters gh are silent in night, a /f/ sound in rough, and a /g/ in ghost. The vowel a represents completely different sounds in cat, cake, father, and all. IPA solves this by using a unique symbol for each distinct sound, making pronunciation unambiguous — the same symbol always represents the same sound regardless of which language you are transcribing.
How this tool transcribes your text
Because English has no consistent letter-to-sound rules, the tool uses a dictionary lookup rather than a rule-based algorithm. It splits your text into individual words, normalises each to lower case, and searches a built-in dictionary derived from the CMU Pronouncing Dictionary — a large phonetic lexicon originally developed for speech research and covering tens of thousands of common English words.
When a word is found, it is replaced with its broad (phonemic) General American IPA transcription. Stress marks are included: ˈ marks a primary-stressed syllable and ˌ marks secondary stress. Words not found in the dictionary are left unchanged inside square brackets — for example [cryonics] — so you can see at a glance which words need a manual lookup.
Reading common IPA symbols
| IPA | Example word | Sound |
|---|---|---|
| æ | cat | short “a” |
| eɪ | cake | long “a” |
| ɪ | kit | short “i” |
| iː | feet | long “i” |
| ʊ | book | short “u” |
| uː | food | long “u” |
| ɝ | bird | r-coloured vowel (American) |
| θ | think | voiceless “th” |
| ð | this | voiced “th” |
| ʃ | ship | ”sh” sound |
Worked example
The phrase Hello world transcribes to həˈloʊ wɝld. The ˈ before loʊ marks the stressed syllable in “hello”, and ɝ is the r-coloured mid vowel characteristic of General American, which is absent in non-rhotic accents like British RP.
Because the output is General American, British RP speakers will notice differences: world in RP would be transcribed with a lengthened vowel and no r, roughly /wɜːld/. For RP transcription, pair this output with a dedicated British pronouncing dictionary.
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