🗾 Japanese Address Splitter
Paste one address per line and the tool automatically splits each into prefecture, city/ward, and remainder. Results shown as a table with CSV (tab / comma) download.
✅ 100% free, no signup, address data never sent to any server
🔒 About Privacy
- ・All processing happens entirely in your browser
- ・Address data is never sent to any server
- ・No storage logs, no upload history, no database
📖 How to Use
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1
Paste addressesPaste one address per line.
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2
Run splitClick Split. All 47 prefectures are detected via regex.
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3
Download CSVDownload as CSV or TSV for Excel / Sheets.
❓ FAQ
What if the address has no prefecture?
Lines without a detectable prefecture are flagged with a warning and the city column is left blank for manual editing.
Does it work for non-Japanese addresses?
This tool only targets the 47 Japanese prefectures and does not support overseas addresses.
Are addresses uploaded to your server?
No. All processing runs entirely in your browser (JavaScript). Addresses never leave your device.
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🐛 Found a bug or issue with this tool?
Free to use, no signup. Even just the steps to reproduce are helpful. Reports go directly to the operator and help us fix issues.
✅
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Your report has been delivered to the operator and will be used to improve the tool.