CSV/Excel Encoding Converter

Fix garbled text in Excel or other software. Convert your CSV or Excel files between UTF-8, GBK, Big5, ISO-8859-1, and more with automatic encoding detection.

Input CSV

Upload CSV/Excel File

Drag & drop your file here, or click to browse

Supports .csv, .txt, .xlsx, .xls files

Input Encoding

Detecting...

Output Encoding

Preview (Decoded)

Why encoding matters?

CSV files are plain text, but the way characters are represented (encoding) varies. If you open a UTF-8 file in an older version of Excel, it might show "garbled" text (like é??ä??). Converting to GBK or UTF-8 with BOM usually fixes this for Windows users.

Secure & Private

Processing happens entirely in your browser. Your CSV data is never uploaded to any server, ensuring 100% privacy and lightning-fast conversion even for large files.