CSV ↔ Excel Converter

Convert CSV to Excel, or Excel to CSV. Automatically fixes character encoding and separator confusion.

Runs 100% in your browser — your file is never uploaded to a server.
Drop your file here or click to choose
Upload a CSV → it's converted to Excel; upload Excel → it's converted to CSV (.csv, .txt, .xlsx, .xls)

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Frequently Asked Questions

The file was usually saved with Windows-1254 encoding instead of UTF-8, or Excel misinterprets UTF-8 without a BOM marker. This tool auto-detects both encodings and can add an optional BOM to the output to fix the problem for good.

Because the decimal separator in many regional settings is a comma, Excel prefers a semicolon as the cell separator. This tool detects the separator automatically; you can also choose it manually.

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