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Convert 1-byte katakana and alphabet to 2-byte

Double-byte characters, which are unique to Asian culture, are very troublesome. On this page, you can batch convert half-width characters to full-width characters under various conditions. You can set conversion options such as converting only Japanese katakana, converting only katakana and symbols, and converting all characters.

[ Example 1 ] Convert katakana only.

[ Example 2 ] Convert all charactor.