Romanization of Japanese

Japanese uses the Roman alphabet as well as kanji, hiragana, and katakana. It is often used to put Japanese words on a computer.
When Romanized text is used for Japanese words, this is called "romaji" ("ローマ字").
Differences among romanizations.
This chart shows in full the three main systems for the romanization of Japanese: Hepburn, Nihon-shiki and Kunrei-shiki:
This chart shows the differences which can be clearly seen among them.