Convert CSV encoding
Preview UTF-8 or CP949 CSV files, correct the input encoding, and save as CSV or XLSX with text cells.
Output CSV / XLSXChoose filesProcessed on your device
Output settings
Prefix formula characters (=, +, -, @, etc.) with an apostrophe. Check whether your upload system accepts this change. XLSX stores values as text cells.
Example
If Korean text in a CP949 file looks garbled when read as UTF-8, select CP949 for input. Once the preview is correct, save as UTF-8 BOM for Excel.
Supported features and limits
- Auto-detection checks UTF-8 first, then tries CP949. Always verify the preview.
- Characters already stored as ? or � require a fresh export from the original system.
- Saving as CP949 stops if a character cannot be represented. Choose UTF-8 to retain it.
- CSV programs may drop leading zeros. XLSX text-cell output preserves them.
Frequently asked questions
Will my original files change?
No. The tool creates new result files. Review the downloaded results before using them.
Are my files uploaded?
Selected files are processed in your browser. File contents and filenames are not sent to a server. Aggregate tool-use counts are collected as described in the privacy notice.