
English has five vowels: A, E, I, O, and U. However, the English language has a complex vowel system, with around 20 distinct vowel sounds (phonemes), including 8 diphthongs. The number of vowel sounds varies depending on the variety of English spoken, with General American English having 21 distinct vowel phonemes and Standard Southern British English (SSBE) having 20. The distinction between short and long vowels is well-known, but diphthongs are also important, as they are vowel sounds that begin as one vowel and slide into another within a single syllable.
| Characteristics | Values |
|---|---|
| Number of vowel sounds in English | 15, 20, or 21 |
| Number of vowel sounds in General American English | 21 |
| Number of vowel sounds in Standard Southern British English | 20 |
| Number of English vowel letters | 5 |
| Number of English vowel IPA symbols | 5 |
| Types of vowels | Short vowels, long vowels, diphthongs, vowels before historical R, and weak vowels |
| Weak vowel | Schwa |
| Most common vowel sound in English | Schwa |
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What You'll Learn
- There are 5 vowels in the English alphabet: a, e, i, o, and u
- There are 20 vowel sounds in English, 8 of which are diphthongs
- Short vowels are usually spelled with a single letter, while long vowel sounds are generally spelled with combinations of letters
- The schwa is the most common vowel sound in English
- The IPA symbols for English long vowels are: /i:/, /ɑ:/, /ɔ:/, /ɜ:/, /u:/

There are 5 vowels in the English alphabet: a, e, i, o, and u
There are five vowels in the English alphabet: A, E, I, O, and U. However, the English language has around 20 distinct vowel sounds (phonemes), making it one of the most complex vowel systems of any language. This complexity arises from the various ways these five letters can be combined and pronounced to create different vowel sounds.
The five vowels can be categorised into two types: short vowels and long vowels. Short vowels are typically spelled with a single letter, while long vowels and other vowel sounds are generally spelled with combinations of letters. For example, the letter 'e' has a different pronunciation in the words 'team' (long e) and 'dead' (short e). It is important to note that the terms "long" and "short" refer to the quality of the vowel sound, not the duration.
The English language also includes diphthongs, which are vowel sounds formed by the combination of two vowel sounds to create an entirely new sound. For example, the word "sit" has a different vowel sound from "seat," despite being spelled with the same letter. Diphthongs can be further classified into two groups: monophthongs, which are pure vowels with a single, stable vowel sound, and diphthongs, which involve a transition from one vowel sound to another within the same syllable.
In addition to the 20 vowel sounds, the letters Y, W, and sometimes GH are also used in vowel sound spellings. For example, the letter 'Y' can be considered a vowel sound in certain words, such as "year," even though it is technically a consonant. This adds to the complexity of English vowel sounds, as the same letter can be pronounced differently depending on its position in a word.
The number of vowel sounds can also vary slightly depending on the variety of English being spoken. For instance, General American English has 21 distinct vowel phonemes, while Standard Southern British English (SSBE) has around 20. These accents may have subtle differences in their pronunciation of certain vowels, such as the GOAT vowel, which starts with a much rounder vowel sound in General American English.
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There are 20 vowel sounds in English, 8 of which are diphthongs
While the English alphabet has only five vowels—A, E, I, O, and U—there are 20 vowel sounds in the English language. Eight of these are diphthongs, or vowel sounds formed by the combination of two vowel sounds. For example, the word "hound" has one syllable, but the vowel sound starts with an "a" sound and glides to an "oo" sound. In phonetics, this is written as "ɑʊ."
The distinction between short and long vowels is relatively straightforward. Short vowels appear individually in words that typically end with consonants. They cannot appear at the end of the last syllable of a word. Long vowels, on the other hand, refer to two or more vowels that appear together in words.
Diphthongs are considered gliding vowels because they glide from one sound to another within the same syllable. While they have two sounds, diphthongs are not necessarily longer than other vowels. They are also different from disyllabic vowel pairings, which have two distinct syllables. For example, the word "reign" contains the diphthong "ei," which starts with an "eh" sound and glides to an "ee" sound, whereas the word "reinvent" has three syllables (re-in-vent) and does not contain a diphthong.
The number of vowel sounds in English depends on the variety of English being spoken. For instance, Standard Southern British English (SSBE) and General American English (GenAm) have slight differences in their vowel sounds. GenAm has 21 distinct vowel phonemes, while SSBE has around 20.
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Short vowels are usually spelled with a single letter, while long vowel sounds are generally spelled with combinations of letters
While the English language has five vowels—A, E, I, O, and U—there are around 20 distinct vowel sounds, or phonemes, in Standard Southern British English (SSBE) and General American English. This makes English one of the most complex vowel systems of any language.
Short vowels are typically spelled with a single letter, whereas long vowel sounds are usually spelled with combinations of letters. However, this is not a strict rule, as there are numerous exceptions. For instance, the letter 'A' in 'about' is a short vowel, while the 'E' in 'team' is a long vowel.
Short vowels are typically found in words that end with consonants. They can never appear at the end of the last syllable of a word. The TRAP vowel, always spelled with an 'A', is an example of a short vowel in SSBE. In contrast, the STRUT vowel, often confused with the TRAP vowel by English learners, is spelled with an 'U', as in the word "cut".
Long vowels, on the other hand, can be made up of two or more vowels that appear together in words. They are not necessarily pronounced for a longer duration than short vowels. Long vowels are indicated by two dots following a vowel symbol in the International Phonetic Alphabet (IPA). For example, the IPA symbol for the long vowel sound in "seat" is /i:/, while the short vowel sound in "sit" is /ɪ/.
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The schwa is the most common vowel sound in English
While English has five vowels—A, E, I, O, and U—and 20 vowel sounds, the schwa is the most common vowel sound in spoken English. It is more than three times more common than any other sound! Linguists estimate that it represents approximately 12% of all the phonemes produced and 20% of all vowel phonemes produced. In other words, about 1 in every 8 phonemes that we utter is a schwa.
The schwa is a reduced, lazy, unstressed vowel phoneme. It is one of the 44 phonemes in English and one of the 18 vowel phonemes. This relaxed, neutral phoneme is represented by the symbol "/ə/". The schwa can be spelled by any vowel letter (A, E, I, O, U, and even Y) in an unstressed position within a word. It is highly adaptable and can replace almost any vowel sound in unstressed syllables, regardless of the original vowel.
The schwa is often considered the easiest phoneme to produce because it requires minimal effort from the vocal apparatus. To articulate the schwa sound, simply open your mouth slightly and engage your vocal cords without moving your tongue, lips, or jaw. This results in a quick, relaxed "uh" or "ih" sound that does not demand precise positioning or muscle tension. It does not have as much energy or crispness as a proper short vowel sound.
The schwa is found in the unstressed syllables of content words like "machine", "soldier", "corrupt", and "pursue". It also appears in little function words like "to", "for", "can", and "some". The schwa is a function of syllable stress and not of spelling. Once learners can recognize stressed syllables, it becomes easier to predict when schwa will be used in an adjacent, unstressed vowel, regardless of the spelling.
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The IPA symbols for English long vowels are: /i:/, /ɑ:/, /ɔ:/, /ɜ:/, /u:/
The English language has five vowels—A, E, I, O, and U—but there are around 20 distinct vowel sounds, or phonemes. This makes English one of the most complex vowel systems of any language in the world. The number of vowel sounds varies depending on the variety of English being spoken. For example, Standard Southern British English (SSBE) and General American English (GenAm) have 20 and 21 distinct vowel phonemes, respectively.
Vowels are speech sounds that are pronounced without the lips, tongue, teeth, or throat blocking the air produced when uttering the letter. They can be further categorized into short vowels and long vowels. Short vowels appear individually in words, while long vowels refer to two or more vowels that appear in words.
Diphthongs are another type of vowel sound. They are formed by the combination of two vowel sounds to create an entirely new speech sound. There are eight diphthongs in the English language, bringing the total number of vowel sounds to around 20.
The International Phonetic Alphabet (IPA) is a system that uses symbols to represent speech sounds. The IPA symbols for English long vowels are: /i:/, /ɑ:/, /ɔ:/, /ɜ:/, /u:/. These symbols may be used to represent different sounds from what they traditionally represent. For example, the traditional "long a sound" and "long e sound" are no longer pronounced for a longer amount of time than other vowels, so calling them "long" gives the wrong idea about their pronunciation.
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Frequently asked questions
English has 5 vowels: A, E, I, O, and U. However, there are around 20 distinct vowel sounds (phonemes), including 8 diphthongs.
Diphthongs are speech sounds formed by the combination of two vowel sounds, creating an entirely new sound.
General American English has 21 distinct vowel phonemes.
Examples of English words with diphthongs include "team" (long e /i:/) and "dead" (short e /ɛ/).
Vowel sounds can be categorized as short vowels, long vowels, diphthongs, vowels before historical R, and weak vowels (schwa).











































