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Hiragana / Katakana Converter

Convert hiragana and katakana in either direction, including halfwidth katakana. Copy the result without uploading text.

Convert in your browser · No sign-up

Kanji readings and romaji are not generated. Small kana and voiced marks are preserved; halfwidth katakana is normalized first.

Up to 100,000 UTF-16 units per input and 1,000,000 per result. See the supported formats and examples below.

Result

Add your input or load an example, then run the tool. Your result will appear here.

How to use

  1. Convert hiragana and katakana in either direction, including halfwidth katakana. Copy the result without uploading text.
  2. Choose the mode or options, then run the tool.
  3. Review the result, then copy or download the TXT file.

Example

こんにちは → コンニチハ

Details and limitations

Text stays in your browser; it is not sent to a conversion server.

Format references

Tool page updated: