The Romaji reference article from the English Wikipedia on 24-Apr-2004
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Romaji

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In Japanese, rōmaji (Japanese: ローマ字 "Roman characters") broadly refers to the Roman alphabet.

In English, the word is usually used to refer specifically to the writing of the Japanese language in Roman characters as opposed to the usual mix of kanji and kana.

Japanese may be written in rōmaji for many reasons: street signs for visiting foreigners; transcription of personal, company, or place names to be used in another language context; dictionaries and textbooks for learners of the language; or even simply for typographic emphasis.

There are a number of different romanization systems in use: the four main ones are Hepburn, Kunrei-shiki (Cabinet order or ISO 3602), Nihon-shiki (ISO 3602 Strict) and JSL. Hepburn is the most widely accepted method outside Japan, and is used on Japanese road signs and passports. The Japanese government, however, officially sanctions Kunrei for use in education.

See also: Cyrillization of Japanese Wikipedia:Manual of Style for Japan-related articles

Table of contents
1 Advantages of each romanization system
2 Example words written in each romanization system
3 Differences between romanization systems

Advantages of each romanization system

Example words written in each romanization system

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
English Japanese Kana spelling Hepburn Kunrei-shiki Nihon-shiki JSL
Roman characters ローマ字 ローマじ rōmaji rômazi rōmazi roomazi
Mount Fuji 富士山 ふじさん Fujisan Huzisan Huzisan Huzisan
Tokyo 東京 とうきょう Tōkyō Tôkyô Tōkyō Tookyoo
tea お茶 おちゃ ocha otya otya otya
governor 知事 ちじ chiji tizi tizi tizi
shrink 縮む ちぢむ chijimu tizimu tidimu tidimu

(TODO: The JSL column needs pitch indicators.)

Differences between romanization systems

Kana HepburnKunrei-shikiNihon-shikiJSL
ううūû ū uu
おう, おおōôōoo
shisi si si
しゃshasya sya sya
しゅshusyu syu syu
しょshosyo syo syo
ji zi zi zi
じゃja zya zya zya
じゅju zyu zyu zyu
じょjo zyo zyo zyo
chiti ti ti
tsutu tu tu
ちゃchatya tya tya
ちゅchutyu tyu tyu
ちょchotyo tyo tyo
ji zi di di
zu zu du du
ぢゃja zya dya dya
ぢゅju zyu dyu dyu
ぢょjo zyo dyo dyo
fu hu hu hu