Shift-JIS ⇔ UTF-8 Converter

Convert text files between Shift-JIS and UTF-8 encoding in your browser. No installation, results in seconds.

When this helps

Accounting staff

An old accounting system exports Shift-JIS CSVs that garble when opened in modern tools.

Convert the export to UTF-8 before importing into Excel or a spreadsheet.

Developers

A client's legacy system only accepts Shift-JIS uploads.

Convert a UTF-8 export back to Shift-JIS before sending it on.

FAQ

Is my file stored on your servers?
No. The file is processed in memory and discarded immediately after the result is returned.
What's the file size limit?
10MB per file on the free tier.