Japanese.7z Page

Use the -mcp switch with Code Page 932 (Japanese) to extract: 7z x "YourFile.7z" -mcp=932

A file containing Japanese characters often results in garbled file names (mojibake) when extracted on a system not set to Japanese locale. This happens because the archive likely uses an old non-Unicode character encoding (like Shift-JIS/Code Page 932) to store filenames. Japanese.7z

This is the most reliable method for handling Japanese character encoding directly. Open Command Prompt or Terminal. Use the -mcp switch with Code Page 932

Modern 7-Zip fully supports Unicode, but if the archive was created with an old tool using SJIS, it needs special handling. Open Command Prompt or Terminal

If you need to extract many such files, temporarily change your Windows system locale to Japanese. Go to > Clock and Region > Region . Click the Administrative tab. Click Change system locale... and select Japanese (Japan) .

Version 19 and later have improved handling of Japanese half-width kana, reducing the occurrence of garbled text.