Hepburn Romanization Tool

Convert Japanese hiragana and katakana to Hepburn romanization.
You can also reverse conversion from Hepburn romanization to Japanese hiragana.

  • Japanese → Romaji
  • Romaji → Japanese
Source Destination


Conversion table

Gojūon a i u e o
ka ki ku ke ko きゃkya きゅkyu きょkyo
sa shi su se so しゃsha しゅshu しょsho
ta chi tsu te to ちゃcha ちゅchu ちょcho
na ni nu ne no にゃnya にゅnyu にょnyo
ha hi fu he ho ひゃhya ひゅhyu ひょhyo
ma mi mu me mo みゃmya みゅmyu みょmyo
ya yu yo
ra ri ru re ro りゃrya りゅryu りょryo
wa i e o
ga gi gu ge go ぎゃgya ぎゅgyu ぎょgyo
za ji zu ze zo じゃja じゅju じょjo
da ji zu de do ぢゃja ぢゅju ぢょjo
ba bi bu be bo びゃbya びゅbyu びょbyo
pa pi pu pe po ぴゃpya ぴゅpyu ぴょpyo
Other a i u e o ya yu yo


As a rule, Sokuon are repeated with the immediately following consonant letter.
As an exception, use "tch" when the immediately following is "ch".


  • きっと → kitto
  • こっち → kocchi → kotchi


As a rule, use "n" for Hatsuon "ん".
As an exception, use "m" when the immediately following is "b, p, m".


  • はんこ → hanko
  • さんばし → sanbashi → sambashi
  • あんぱん → anpan → ampan
  • あんまん → anman → amman


Convert "uu" to "u".
Convert "oo" and "ou" to "o".


  • くうき → kuuki → kuki
  • おおきい → ookii → okii
  • ほうき → houki → hoki


There are various types (variants) in the Hepburn romanization. Also, depending on whether the word to be converted is "name" or not, the conversion rules may differ. However, since it is difficult to support all types systematically, the conversion rule 'Convert "oo" and "ou" to "o".' is applied to Chōon. Therefore, it is a specification that "いのうえ" is converted to "inoe".


  • いのうえ → inoue → inoe
  • おうえん → ouen → oen
  • かのう → kanou → kano
  • のうか → nouka → noka

Related sites

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Also, if you find a problem or bug, it would be helpful if you could contact us.


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