Tips for Matching Width When Filling Forms

Published: Oct 19, 2026 | Updated: Oct 19, 2026 | About (Japanese)

Tips

• If a form says "half-width letters and digits", use half-width.
• Phone numbers, postal codes and email addresses are normally half-width.
• Furigana for names is often full-width katakana.

Convert with Convert Full-Width, Half-Width, Hiragana and Katakana, then paste.

Use "Convert Full-Width, Half-Width, Hiragana and Katakana" (free)

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More guides for this tool

• How to Convert Full-Width to Half-Width (Free, Phone OK)
• How to Convert Half-Width to Full-Width
• How to Convert Hiragana to Katakana
• How to Turn Half-Width Katakana into Full-Width
• How to Make Email Addresses and Phone Numbers Half-Width
• What to Do If Nothing Is Converted

See all guides