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About This Tool
This tool helps you convert Japanese text between half-width (半角) and full-width (全角) characters. It supports Katakana, alphanumeric characters, symbols, and spaces.
What's the difference?
- Half-width (半角): Narrow characters (ｱｲｳ, ABC, 123) - commonly used in forms and databases
- Full-width (全角): Wide characters (アイウ, ＡＢＣ, １２３) - standard for Japanese text
Common Use Cases
- Formatting names for official Japanese documents
- Preparing data for Japanese database systems
- Ensuring consistency in Japanese text input
- Converting legacy data formats