Katakana Unicode UTF-8 ⇆ ASCII character set conversion, Katakana ⇆ Rōmaji This tool is made for those working with Japanese Katakana in page design work. It allows conversion of UTF-8 text to the smaller ASCII Katakana charset used in most designer fonts. As a check for non native Japanese, the Katakana is also converted to Rōmaji. In Rōmaji it is easier to understand the meaning of the Katakana