Editing H

{{short description|8th letter of the Latin alphabet}}
{{Distinguish|Shha|♄|En (Cyrillic)}}
{{About|the letter of the alphabet}}
{{pp-semi-indef}}
{{pp-move}}
{{Use dmy dates|date=July 2016}}
{{Infobox grapheme
|name=H
|letter=H h
|script=[[Latin script]]
|type=[[Alphabet]]
|typedesc=ic
|language=[[Latin language]]
|phonemes={{grid list|[{{IPA link|h}}]|[{{IPA link|x}}]|[{{IPA link|ħ}}]|[{{IPA link|∅}}]|[{{IPA link|ɦ}}]|[{{IPA link|ɥ}}]|[{{IPA link|ʜ}}]|[{{IPA link|ʔ}}]|[{{IPA link|ʰ|◌ʰ}}]|[{{IPA link|ç}}]|{{IPAc-en|eɪ|tʃ}}|{{IPAc-en|h|eɪ|tʃ}}}}
|unicode=U+0048, U+0068
|alphanumber=8
|number=
|fam1=<hiero>O6</hiero><hiero>N24</hiero><hiero>V28</hiero>
|fam2=[[File:Proto-semiticH-01.svg|class=skin-invert-image|20px|Ḥet]]
|fam3=[[File:Protohet.svg|class=skin-invert-image|20px|Heth]]
|fam4=[[File:Phoenician heth.svg|class=skin-invert-image|20px|Ḥet]]
|fam5=[[File:Greek_Heta_combined.svg|class=skin-invert-image|40px|Early Greek Heta]]
|fam6=[[𐌇]]
|usageperiod= {{circa}} 700 BCE to present
|children={{grid list|[[Ħ]]|{{not a typo|[[Ƕ]]}}|[[Ⱶ]]|[[Ꟶ]]|[[Һ]]|[[ʰ]]|[[Planck constant|''h'']]|[[reduced Planck constant|''ħ'']]|{{not a typo|[[ℍ|<math>\mathbb{H}</math>]]}}}}
|sisters={{grid list|[[И]]|[[Һ]]|[[Ԧ]]|[[Heth|ח]]|[[Heth|ح]]|[[Heth|ܚ]]|[[ࠇ]]|[[𐎅]]|[[𐎈]]|[[wikt:Հ|Հ]] [[wikt:հ|հ]]}}
|equivalents=
|associates=[[List of Latin-script digraphs#H|h(x)]], [[ch (digraph)|ch]], [[gh (digraph)|gh]], [[nh (digraph)|nh]], [[phi|ph]], [[sh (digraph)|sh]], [[sh (digraph)|ſh]], [[th (digraph)|th]], [[pronunciation of English ⟨wh⟩|wh]], [[list of Latin-script digraphs#h⟩|(x)h]]
|direction=Left-to-right
|image=File:Latin_letter_H.svg
|imageclass=skin-invert-image
}}
{{Latin alphabet sidebar|h}}

'''H''', or '''h''', is the eighth [[Letter (alphabet)|letter]] of the [[Latin alphabet]], used in the [[English alphabet|modern English alphabet]], including the alphabets of other western European languages and others worldwide. Its name in English is [[English alphabet#Letter names|''aitch'']] (pronounced {{IPAc-en|eɪ|tʃ|audio=LL-Q1860 (eng)-Flame, not lame-H.wav}}, plural ''aitches''), or regionally ''haitch'' (pronounced {{IPAc-en|h|eɪ|tʃ}}, plural ''haitches'')''.''<!-- The pronunciation 'haitch' is usually considered "h-adding". While detailed later in this article, it is not mentioned in the citation and should not be inserted here. --><ref name=mw>"H" ''[[Oxford English Dictionary]],'' 2nd edition (1989); ''Merriam-Webster's Third New International Dictionary of the English Language, Unabridged'' (1993); "aitch" or "haitch", op. cit.</ref>

==Name==
===English===
For most English speakers, the name for the letter is pronounced as {{IPAc-en|eɪ|tʃ}} and spelled "aitch"<ref name=mw/> or occasionally "eitch". The pronunciation {{IPAc-en|h|eɪ|tʃ}} and the associated spelling "haitch" are often considered to be [[H-dropping#H-insertion|h-adding]] and are considered non-standard in England.<ref name="how do you pronounce H"/> It is, however, a feature of [[Hiberno-English]],<ref>{{cite book |url=https://books.google.com/books?id=uPo0oB19gDUC |title=A Dictionary of Hiberno-English: The Irish Use of English |first=T. P. |last=Dolan |date=1 January 2004 |publisher=Gill & Macmillan Ltd |access-date=3 September 2016 |via=Google Books |isbn=9780717135356 |archive-date=17 January 2017 |archive-url=https://web.archive.org/web/20170117125616/https://books.google.com/books?id=uPo0oB19gDUC |url-status=live }}</ref> and occurs sporadically in various other dialects.

The perceived name of the letter affects the choice of [[a and an|indefinite article]] before [[initialism]]s beginning with H: for example "an H-bomb" or "a H-bomb". The pronunciation {{IPA|/heɪtʃ/}} may be a [[hypercorrection]] formed by analogy with the names of the other letters of the alphabet, most of which include the sound they represent.<ref>Todd, L. & Hancock I.: "International English Ipod", page 254. Routledge, 1990.</ref>

The ''haitch'' pronunciation of ''h'' has spread in England, being used by approximately 24% of English people born since 1982,<ref>[[John C. Wells]], ''Longman Pronunciation Dictionary'', page 360, Pearson, Harlow, 2008</ref> and polls continue to show this pronunciation becoming more common among younger native speakers. Despite this increasing number, the pronunciation without the {{IPA|/h/}} sound is still considered standard in England, although the pronunciation with {{IPA|/h/}} is also attested as a legitimate variant.<ref name="how do you pronounce H">{{cite news |url=https://www.bbc.co.uk/news/magazine-11642588 |title='Haitch' or 'aitch'? How do you pronounce 'H'? |work=BBC News |access-date=3 September 2016 |archive-date=12 October 2016 |archive-url=https://web.archive.org/web/20161012035400/http://www.bbc.co.uk/news/magazine-11642588 |url-status=live }}</ref> In [[Northern Ireland]], the pronunciation of the letter has been used as a [[shibboleth]], with Catholics typically pronouncing it with the {{IPA|/h/}} and Protestants pronouncing the letter without it.<ref>{{cite book|url=https://books.google.com/books?id=uPo0oB19gDUC|title=A Dictionary of Hiberno-English: The Irish Use of English|first=T. P.|last=Dolan|date=1 January 2004|publisher=Gill & Macmillan Ltd|isbn=9780717135356}}</ref>

Authorities disagree about the history of the letter's name. The ''[[Oxford English Dictionary]]'' says the original name of the letter was {{IPA|la|ˈaha|}} in Latin; this became {{IPA|la|ˈaka|}} in Vulgar Latin, passed into English via Old French {{IPA|ang|atʃ|}}, and by Middle English was pronounced {{IPA|enm|aːtʃ|}}. ''[[The American Heritage Dictionary of the English Language]]'' derives it from French ''hache'' from Latin ''haca'' or ''hic''. [[Anatoly Liberman]] suggests a conflation of two obsolete orderings of the alphabet, one with ''H'' immediately followed by ''K'' and the other without any ''K'': reciting the former's ''..., H, K, L,...'' as {{IPA|[...(h)a ka el ...]}} when reinterpreted for the latter ''..., H, L,...'' would imply a pronunciation of {{IPA|[(h)a ka]}} for ''H''.<ref>{{cite web |url=https://blog.oup.com/2013/08/alphabet-soup-letter-h-y-origin-etymology/ |title=Alphabet soup, part 2: H and Y |last=Liberman |first=Anatoly |date=7 August 2013 |work=Oxford Etymologist |publisher=Oxford University Press |access-date=3 October 2013 |archive-date=4 October 2013 |archive-url=https://web.archive.org/web/20131004223650/http://blog.oup.com/2013/08/alphabet-soup-letter-h-y-origin-etymology/ |url-status=live }}</ref>

===Other languages===
* [[French language|French]]: {{lang|fr|ache}} {{IPA|fr|aʃ|}}
* [[German language|German]]: {{lang|de|ha}} {{IPA|de|haː|}}
* [[Portuguese language|Portuguese]]: {{lang|pt|agá}} {{IPA|pt|ɐˈɣa, aˈɡa|}}
* [[Spanish language|Spanish]]: {{lang|es|hache}} {{IPA|es|'atʃe|}}
* [[Italian language|Italian]]: {{lang|it|acca}} {{IPA|it|ˈakːa|}}
* [[Danish language|Danish]], [[Norwegian language|Norwegian]] and [[Swedish language|Swedish]]: ''hå'' [{{IPA|ˈho|}}]
* [[Polish language|Polish]]: ''ha'' {{IPA|pl|ˈxa|}}
* [[Czech language|Czech]]: ''ha'' {{IPA|cs|ˈɦa|}}

==History==
{| class="wikitable"
! Egyptian hieroglyph<br>fence
! Proto-Sinaitic<br>ḥaṣr
! Phoenician<br>[[Heth]]
! Western Greek<br>[[Heta]]
! Etruscan<br>[[𐌇|H]]
! Latin<br>H
|--- align=center
|<hiero>N24</hiero>
|[[File:Proto-semiticH-01.svg|class=skin-invert-image|x30px]]
|[[File:PhoenicianH-01.svg|class=skin-invert-image|x30px]]
|[[File:Greek Eta archaic.svg|class=skin-invert-image|x20px]][[File:Greek Eta 2-bars.svg|class=skin-invert-image|x20px]]<br>[[File:Greek Eta square-2-bars.svg|class=skin-invert-image|x20px]][[File:Greek Eta diagonal.svg|class=skin-invert-image|x20px]]
|[[File:EtruscanH-01.svg|class=skin-invert-image|x20px]]<br/>[[File:EtruscanH-02.svg|class=skin-invert-image|x20px]]
|[[File:Capitalis monumentalis H.svg|class=skin-invert-image|x30px|Latin H]]
|}
The original [[Semitic languages|Semitic]] letter [[Heth]] most likely represented the [[voiceless pharyngeal fricative]] ({{IPA link|ħ}}). The form of the letter probably stood for a fence or posts.

The [[Greek alphabet|Greek]] [[Eta (letter)|Eta]] 'Η' in [[archaic Greek alphabets#Eta and /h/|archaic Greek alphabets]], before coming  to represent a long vowel, {{IPA|/ɛː/}}, still represented a similar sound, the [[voiceless glottal fricative]] {{IPA|/h/}}. In this context, the letter eta is also known as ''[[Heta]]''. Thus, in the [[Old Italic alphabets]], the letter Heta of the [[Euboean alphabet]] was adopted with its original sound value {{IPA|/h/}}.

While [[Etruscan language|Etruscan]] and [[Latin]] had {{IPA|/h/}} as a [[phoneme]], almost all [[Romance languages]] lost the sound—[[Romanian language|Romanian]] later re-borrowed the {{IPA|/h/}} phoneme from its neighbouring Slavic languages, and [[Spanish language|Spanish]] developed a secondary {{IPA|/h/}} from {{IPA|/f/}}, before losing it again; various Spanish dialects have developed {{IPA|[h]}} as an [[allophone]] of {{IPA|/s/}} or {{IPA|/x/}} in most Spanish-speaking countries, and various dialects of [[Portuguese language|Portuguese]] use it as an allophone of {{IPA|/ʁ/}}. 'H' is also used in many spelling systems in [[digraph (orthography)|digraphs]] and [[trigraph (orthography)|trigraphs]], such as 'ch', which represents {{IPA|/tʃ/}} in Spanish, [[Galician language|Galician]], and [[Old Portuguese]]; {{IPA|/ʃ/}} in [[French language|French]] and [[modern Portuguese]]; {{IPA|/k/}} in [[Italian language|Italian]] and French.

==Use in writing systems==
{| class="wikitable mw-collapsible"
|+ Pronunciation of {{angbr|h}} by language
! Orthography
! Phonemes
|-
! {{nwr|[[Standard Chinese]]}} ([[Pinyin]])
| {{IPAslink|x}}
|-
! [[Czech orthography|Czech]]
| {{IPAslink|ɦ}}
|-
! [[English orthography|English]]
| {{IPAslink|h}}, ''silent''
|-
! [[French orthography|French]]
| ''silent''
|-
! [[German orthography|German]]
| {{IPAslink|h}}, ''silent''
|-
! [[Polish orthography|Polish]] 
| {{IPAslink|x}}
|-
! [[Portuguese orthography|Portuguese]] 
| ''silent''
|-
! [[Spanish orthography|Spanish]]
| ''silent''
|-
! [[Turkish alphabet|Turkish]]
| {{IPAslink|h}}
|}

===English===
In English, {{angbr|h}} occurs as a single-letter [[grapheme]] (being either [[silent letter|silent]] or representing the [[voiceless glottal fricative]] {{IPAslink|h}} and in various [[digraph (orthography)|digraphs]]:
* {{angbr|ch}} representing {{IPAslink|tʃ}}, {{IPAslink|ʃ}}, {{IPAslink|k}}, or {{IPAslink|x}}
* {{angbr|gh}} being silent or representing {{IPAslink|ɡ}}, {{IPAslink|k}}, {{IPAslink|p}}, or {{IPAslink|f}}
* {{angbr|ph}} representing {{IPAslink|f}}
* {{angbr|rh}} representing {{IPAslink|r}}
* {{angbr|sh}} representing {{IPAslink|ʃ}}
* {{angbr|th}} representing {{IPAslink|θ}} or {{IPAslink|ð}}
* {{angbr|wh}} representing {{IPAslink|hw}}<ref>In many dialects, {{IPA|/hw/}} and {{IPA|/w/}} have merged</ref> or {{IPAslink|h}}
The letter is silent in a [[syllable rime]], as in ''ah'', ''ohm'', ''dahlia'', ''cheetah'', and ''pooh-poohed'', as well as in certain other words (mostly of French origin) such as ''hour'', ''honest'', ''herb'' (in [[American English|American]] but not [[British English]]) and ''vehicle'' (in certain varieties of English). Initial {{IPA|/h/}} is often not pronounced in the [[weak and strong forms in English|weak form]] of some [[function word]]s, including ''had'', ''has'', ''have'', ''he'', ''her'', ''him'', ''his'', and in some varieties of English (including most regional dialects of England and Wales), it is often [[H-dropping|omitted]] in all words. It was formerly common for ''an'' rather than ''a'' to be used as the indefinite article before a word beginning with {{IPA|/h/}} in an [[stress (linguistics)|unstressed]] syllable, as in "an historian", but the use of ''a'' is now more usual.

In English, the pronunciation of {{angbr|h}} as /h/ can be analyzed as a voiceless vowel. That is, when the phoneme /h/ precedes a vowel, /h/ may be realized as a voiceless version of the subsequent vowel. For example, the word {{angbr|hit}}, /hɪt/ is realized as [ɪ̥ɪt].<ref>{{cite web |url=https://linguistics.stackexchange.com/questions/4834/why-is-h-called-voiceless-vowel-phonetically-and-h-consonant-phonologically/4836 |title=phonology - Why is /h/ called voiceless vowel phonetically, and /h/ consonant phonologically? |website=Linguistics Stack Exchange |access-date=2019-05-05 |archive-date=5 May 2019 |archive-url=https://web.archive.org/web/20190505190530/https://linguistics.stackexchange.com/questions/4834/why-is-h-called-voiceless-vowel-phonetically-and-h-consonant-phonologically/4836 |url-status=live }}</ref>

H is the [[letter frequency|eighth most frequently used letter]] in the English language (after [[S]], [[N]], [[I]], [[O]], [[A]], [[T]], and [[E]]), with a frequency of about 6.1% in words.<ref name=micka>{{cite web |last=Mička |first=Pavel |title=Letter frequency (English) |url=http://en.algoritmy.net/article/40379/Letter-frequency-English |website=Algoritmy.net |access-date=13 November 2024 |archive-date=4 March 2021 |archive-url=https://web.archive.org/web/20210304152631/http://en.algoritmy.net/article/40379/Letter-frequency-English |url-status=live|quote=Source is Leland, Robert. Cryptological mathematics. [s.l.] : The Mathematical Association of America, 2000. 199 p. ISBN 0-88385-719-7 }}</ref>

===Other languages===
In [[German language|German]], following a vowel, it often silently indicates that the vowel is long: In the word {{lang|de|erhöhen}} ('heighten'), the second {{angbr|h}} is mute for most speakers outside of Switzerland. In 1901, a [[spelling reform]] eliminated the silent {{angbr|h}} in nearly all instances of {{angbr|th}} in native German words such as ''thun'' ('to do') or ''Thür'' ('door'). It has been left unchanged in words derived from Greek, such as {{lang|de|Theater}} ('theater') and {{lang|de|Thron}} ('throne'), which continue to be spelled with {{angbr|th}} even after the last German spelling reform.

In [[Spanish language|Spanish]] and [[Portuguese language|Portuguese]], {{angbr|h}} is a silent letter with no pronunciation, as in {{Lang|es|hijo}} {{IPA|es|ˈixo|}} ('son') and {{Lang|pt|húngaro}} {{IPA|pt|ˈũɡaɾu|}} ('Hungarian'). The spelling reflects an earlier pronunciation of the sound {{IPA|/h/}}. In words where the {{Angbr|h}} is derived from a Latin {{IPA|/f/}}, it is still sometimes pronounced with the value {{IPA|[h]}} in some regions of [[Andalusia]], [[Extremadura]], [[Canary Islands|Canarias]], [[Cantabria]], and the Americas. Some words beginning with {{IPA|[je]}} or {{IPA|[we]}}, such as {{langx|es|label=none|hielo|lit=ice}} and {{langx|es|label=none|huevo|lit=egg}}, were given an initial {{angbr|h|}} to avoid confusion between their initial semivowels and the consonants {{angbr|j}} and {{angbr|v}}. This is because {{angbr|j}} and {{angbr|v}} used to be considered variants of {{angbr|i}} and {{angbr|u}} respectively. {{angbr|h}} also appears in the digraph {{angbr|ch}}, which represents {{IPAslink|tʃ}} in Spanish and northern Portugal, and {{IPAslink|ʃ}} in varieties that have merged both sounds (the latter originally represented by {{angbr|x}} instead), such as most of the Portuguese language and some Spanish dialects, prominently [[Chilean Spanish]].

[[French language|French]] orthography classifies words that begin with this letter in two ways, one of which can affect the pronunciation, even though it is a silent letter either way. The ''H muet'', or "mute" {{angbr|h}}, is considered as though the letter were not there at all. For example, the singular definite [[article (grammar)|article]] ''le'' or ''la'', which is [[elision (French)|elided]] to ''l''' before a vowel, elides before an ''H muet'' followed by a vowel. For example, ''le + hébergement'' becomes ''l'hébergement'' ('the accommodation'). The other kind of {{angbr|h}} is called ''h aspiré'' ("[[aspirated h|aspirated '{{angbr|h}}']]", though it is not normally aspirated phonetically), and does not allow elision or [[liaison (French)|liaison]]. For example, in ''le homard'' ('the lobster') the article ''le'' remains unelided, and may be separated from the noun with a bit of a glottal stop. Most words that begin with an ''H muet'' come from Latin (''honneur'', ''homme'') or from Greek through Latin (''hécatombe''), whereas most words beginning with an ''H aspiré'' come from Germanic (''harpe'', ''hareng'') or non-Indo-European languages (''harem'', ''hamac'', ''haricot''); in some cases, an orthographic {{angbr|h}} was added to disambiguate the {{IPA|[v]}} and semivowel {{IPA|[ɥ]}} pronunciations before the introduction of the distinction between the letters {{angbr|v}} and {{angbr|u}}: ''huit'' (from ''uit'', ultimately from Latin ''octo''), ''huître'' (from ''uistre'', ultimately from Greek through Latin ''ostrea'').

In Italian, {{angbr|h}} has no [[phonology|phonological]] value. Its most important uses are in the [[digraph (orthography)|digraphs]] 'ch' {{IPA|/k/}} and 'gh' {{IPA|/ɡ/}}, as well as to differentiate the spellings of certain short words that are [[homophone]]s, for example, some [[present tense]] forms of the verb ''avere'' ('to have') (such as ''hanno'', 'they have', vs. ''anno'', 'year'), and in short [[interjections]] (''oh'', ''ehi'').

Some languages, including [[Czech language|Czech]], [[Slovak language|Slovak]], [[Hungarian language|Hungarian]], [[Finnish language|Finnish]], and [[Estonian language|Estonian]], use {{angbr|h}} as a [[voiced glottal fricative|breathy voiced glottal fricative]] {{IPA|[ɦ]}}, often as an allophone of otherwise voiceless {{IPA|/h/}} in a voiced environment.

In [[Hungarian phonology|Hungarian]], the letter represents a phoneme {{IPAslink|h}} with four allophones: {{IPAblink|h}} before vowels, {{IPAblink|ɦ}} between two vowels, {{IPAblink|ç}} after [[front vowel]]s, and {{IPAblink|x}} word-finally after [[back vowel]]s. It can also be a silent word-finally after back vowels. It is {{IPAblink|xː}} when geminated. In archaic spelling, the digraph {{angbr|ch}} represents {{IPAslink|t͡ʃ}} (as in the name ''[[István Széchenyi|Széchenyi]]'') and {{IPAslink|h}} (as in ''[[:wikt:pech#Hungarian|pech]]'', which is pronounced {{IPA|[pɛxː]}}); in certain environments it breaks palatalization of a consonant, as in the name ''Beöthy'', which is pronounced {{IPA|[bøːti]}} (without the intervening ''h,'' the name ''Beöty'' could be pronounced {{IPA|[bøːc]}}); and finally, it acts as a silent component of a digraph, as in the name ''Vargha,'' pronounced {{IPA|[vɒrgɒ]}}.

In [[Ukrainian language|Ukrainian]] and [[Belarusian language|Belarusian]], when written in the Latin alphabet, {{angbr|h}} is also commonly used for {{IPA|/ɦ/}}, which is otherwise written with the Cyrillic letter {{angbr|г}}.

In [[Irish language|Irish]], {{angbr|h}} is not considered an independent letter, except for a very few non-native words; however, {{angbr|h}} placed after a consonant is known as a "séimhiú" and indicates the [[lenition]] of that consonant; {{angbr|h}} began to replace the original form of a séimhiú, a dot placed above the consonant, after the introduction of typewriters.

In most dialects of Polish, both {{angbr|h}} and the digraph {{angbr|ch}} always represent {{IPA|/x/}}.

In [[Basque language|Basque]], during the 20th century, it was not used in the orthography of the Basque dialects in Spain but it marked an aspiration in the North-Eastern dialects. During the [[Standard Basque|standardization of Basque]] in the 1970s, a compromise was reached that ''h'' would be accepted if it were the first consonant in a syllable. Hence, ''herri'' ("people") and ''etorri'' ("to come") were accepted instead of ''erri'' ([[Biscayan Basque|Biscayan]]) and ''ethorri'' ([[Souletin]]).

===Other systems===
As a phonetic symbol in the [[International Phonetic Alphabet]] (IPA), it is used mainly for the so-called aspirations (fricative or trills), and variations of the plain letter are used to represent two sounds: the lowercase form {{IPAalink|h}} represents the [[voiceless glottal fricative]], and the small capital form {{IPAalink|ʜ}} represents the [[voiceless epiglottal fricative]] (or trill). With a bar, minuscule {{IPAalink|ħ}} is used for a [[voiceless pharyngeal fricative]]. Specific to the IPA, a hooked {{IPAalink|ɦ}} is used for a [[voiced glottal fricative]], and a superscript {{IPAalink|ʰ}} is used to represent [[aspiration (phonetics)|aspiration]].

==Other uses==
{{main article|H (disambiguation)}}
* [[Unit prefix]] h, meaning 100 times.

==Related characters==
<!-- Please only list characters (symbols in a writing system, but not just convenience code points in Unicode) that are actually related in terms of origin to the letter that is the topic of this article. Characters that merely look subjectively similar need not apply. See https://en.wikipedia.org/wiki/Wikipedia:Verifiability and https://en.wikipedia.org/wiki/Wikipedia:Identifying_reliable_sources before adding more. -->

===Descendants and related characters in the Latin alphabet===
*H with [[diacritic]]s: [[Ĥ|Ĥ ĥ]] [[Ȟ|Ȟ ȟ]] [[Ħ|Ħ ħ]] [[Cedilla|Ḩ ḩ]] [[Ⱨ|Ⱨ ⱨ]] [[Macron (diacritic)|ẖ ẖ]] [[dot (diacritic)|Ḥ ḥ Ḣ ḣ]] [[Ḧ|Ḧ ḧ]] [[Ḫ|Ḫ ḫ]] [[ꞕ]] [[Heng (letter)|Ꜧ ꜧ]]
*[[International Phonetic Alphabet|IPA]]-specific symbols related to H: {{IPA link|ʜ}} {{IPA link|ɦ}} {{IPA link|ʰ}} {{IPA link|ʱ}} {{IPA link|ɥ}} {{IPA link|ᶣ}}<ref>{{cite web |url=https://www.unicode.org/L2/L2004/04132-n2740-phonetic.pdf |title=L2/04-132 Proposal to add additional phonetic characters to the UCS |date=2004-04-19 |first=Peter |last=Constable |access-date=24 March 2018 |archive-date=11 October 2017 |archive-url=https://web.archive.org/web/20171011014355/http://www.unicode.org/L2/L2004/04132-n2740-phonetic.pdf |url-status=live }}</ref> {{IPA link|ɧ}}
*[[International Phonetic Alphabet#Superscript IPA|Superscript IPA]] symbols related to H:<ref name="L220252">{{Cite web|title=L2/20-252R: Unicode request for IPA modifier-letters (a), pulmonic|url=https://www.unicode.org/L2/L2020/20252r-mod-ipa-a.pdf|date=2020-11-08|first1=Kirk|last1=Miller|first2=Michael|last2=Ashby}}</ref> 𐞖 𐞕
*[[ꟸ]]: Modifier letter capital H with stroke is used in [[VoQS]] to represent [[faucalized voice]].
*{{not a typo|ᴴ}} : Modifier letter H is used in the [[Uralic Phonetic Alphabet]]<ref>{{cite web |url=https://www.unicode.org/L2/L2002/02141-n2419-uralic-phonetic.pdf |title=L2/02-141: Uralic Phonetic Alphabet characters for the UCS |date=2002-03-20 |first1=Michael |last1=Everson |author-link1=Michael Everson |display-authors=etal |access-date=24 March 2018 |archive-date=19 February 2018 |archive-url=https://web.archive.org/web/20180219081033/http://www.unicode.org/L2/L2002/02141-n2419-uralic-phonetic.pdf |url-status=live }}</ref>
*{{not a typo|ₕ}} : Subscript small h was used in the Uralic Phonetic Alphabet prior to its formal standardization in 1902<ref>{{cite web |url=https://www.unicode.org/L2/L2009/09028-n3571-upa-additions.pdf |title=L2/09-028: Proposal to encode additional characters for the Uralic Phonetic Alphabet |date=2009-01-27 |first1=Klaas |last1=Ruppel |first2=Tero |last2=Aalto |first3=Michael |last3=Everson |access-date=24 March 2018 |archive-date=11 October 2017 |archive-url=https://web.archive.org/web/20171011014359/http://www.unicode.org/L2/L2009/09028-n3571-upa-additions.pdf |url-status=live }}</ref>
*{{not a typo|ʰ}} : Modifier letter small h is used in [[Indo-European studies]]<ref>{{cite web |url=https://www.unicode.org/L2/L2004/04191-n2788-laryngeals.pdf |title=L2/04-191: Proposal to encode six Indo-Europeanist phonetic characters in the UCS |date=2004-06-07 |first1=Deborah |last1=Anderson |first2=Michael |last2=Everson |access-date=24 March 2018 |archive-date=11 October 2017 |archive-url=https://web.archive.org/web/20171011014402/http://www.unicode.org/L2/L2004/04191-n2788-laryngeals.pdf |url-status=live }}</ref>
*[[ʮ]] and [[ʯ]] : Turned H with fishhook and turned H with fishhook and tail are used in Sino-Tibetanist linguistics<ref>{{cite web |url=https://www.unicode.org/L2/L2001/01347-n2366r.pdf |title=L2/01-347: Proposal to add six phonetic characters to the UCS |date=2001-09-20 |first1=Richard |last1=Cook |first2=Michael |last2=Everson |access-date=24 March 2018 |archive-date=11 October 2017 |archive-url=https://web.archive.org/web/20171011014401/http://www.unicode.org/L2/L2001/01347-n2366r.pdf |url-status=live }}</ref>
*{{not a typo|Ƕ ƕ}} : Latin letter [[hwair]], derived from a ligature of the digraph hv, and used to transliterate the [[Gothic alphabet|Gothic]] letter 𐍈 (which represented the sound [hʷ])
*Ⱶ ⱶ : [[Claudian letters]]<ref>{{cite web |url=https://www.unicode.org/L2/L2005/05193r2-n2960r2-claudian.pdf |title=L2/05-193R2: Proposal to add Claudian Latin letters to the UCS |date=2005-08-12 |first=Michael |last=Everson |access-date=24 March 2018 |archive-date=14 June 2019 |archive-url=https://web.archive.org/web/20190614223725/http://www.unicode.org/L2/L2005/05193r2-n2960r2-claudian.pdf |url-status=live }}</ref>
*Ꟶ ꟶ : Reversed half h used in Roman inscriptions from the Roman provinces of Gaul<ref>{{cite web |url=https://www.unicode.org/L2/L2019/19092-n5039-reversed-half-h.pdf |title=L2/19-092: Proposal to encode Latin Letter Reversed Half H |date=2019-03-25 |first1=Andrew |last1=West |first2=Michael |last2=Everson |access-date=17 March 2020 |archive-date=13 June 2019 |archive-url=https://web.archive.org/web/20190613190240/http://www.unicode.org/L2/L2019/19092-n5039-reversed-half-h.pdf |url-status=live }}</ref>

===Ancestors, siblings, and descendants in other alphabets===
*𐤇 : [[Phoenician alphabet|Semitic]] letter [[Heth]], from which the following symbols derive:
**Η η : [[Greek alphabet|Greek]] letter [[Eta (letter)|Eta]], from which the following symbols derive:
***𐌇 : [[Old Italic script|Old Italic]] H, the ancestor of modern Latin H
****{{Script|Runr|ᚺ, ᚻ}} : [[Runes|Runic]] letter [[haglaz]], which is probably a descendant of Old Italic H
***Һ һ : [[Cyrillic]] letter [[Shha]], which derives from Latin H
***И и : Cyrillic letter [[И]], which derives from the Greek letter [[Eta (letter)|Eta]]
***{{Script|Goth|𐌷}} : [[Gothic alphabet|Gothic]] letter haal
***[[Ho (Armenian letter)|Armenian letter ho (Հ)]]{{citation needed|date=June 2023}}

===Derived signs, symbols, and abbreviations===
*{{math|''h''}} : [[Planck constant]]
*ℏ : [[reduced Planck constant]]
*<math>\mathbb{H}</math> : [[Blackboard bold]] capital H used in [[quaternion]] notation

==Other representations==
===Computing <span class="anchor" id="Computing codes"></span>===
{{charmap|0048|0068|FF28|FF48
| name1            = Latin Capital Letter H
| name2            = Latin Small Letter H
| name3            = FULLWIDTH LATIN CAPITAL LETTER H
| name4            = FULLWIDTH LATIN SMALL LETTER H
| map1             = [[EBCDIC]] family
| map1char1        = C8
| map1char2        = 88
| map2             = [[ASCII]] <sup>1</sup>
| map2char1        = 48
| map2char2        = 68
}}

<sup>1</sup> Also for encodings based on ASCII, including the DOS, Windows, ISO-8859, and Macintosh families of encodings.

===Other===
{{Letter other reps
|NATO=Hotel
|Morse=····
|Character=H8
|Braille=⠓
|fingerspelling=H
}}
{{clear}}

==See also==
* [[Handshape]]
** [[American Sign Language grammar]]
* [[List of Egyptian hieroglyphs#H]]

==References==
{{Reflist|30em}}

==External links==
{{Spoken Wikipedia|date=2021-04-03|En-H-article.ogg}}
{{EB1911 poster|H}}
{{Commons}}
*{{Wiktionary-inline|H}}
*{{Wiktionary-inline|h}}
* [https://web.archive.org/web/20141014234828/http://www.ce.berkeley.edu/~coby/essays/h.htm Lubliner, Coby. 2008. "The Story of H."] (essay on origins and uses of the letter "h")

{{Latin script|H|}}

[[Category:ISO basic Latin letters]]