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CSV ↔ Excel Converter

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csv to excel · 엑셀 변환 · csv xlsx · excel to csv · csv 엑셀 변환

CSV ↔ Excel Converter

Convert CSV to Excel (.xlsx) or Excel back to CSV.

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Drop a .csv or .xlsx file or click

CSV → Excel builds an .xlsx; Excel → CSV exports the first sheet (with a UTF-8 BOM so it opens cleanly). Everything runs in your browser — files are never uploaded.

How to use

  1. 1

    Drop a .csv or .xlsx file.

  2. 2

    The direction is detected automatically.

  3. 3

    Click Convert to download the result.

FAQ

Is this tool free?

Yes — it is completely free to use, with no account or sign-up required.

What is this tool?

Drop a CSV file to get a proper Excel .xlsx workbook, or drop an .xlsx/.xls file to export it back to CSV. Conversion direction is detected from the file you drop. The CSV export includes a UTF-8 BOM so Korean and other non-ASCII text open cleanly in Excel. Handy for spreadsheets, data exports and re-importing. Everything runs in your browser — files are never uploaded — and it is free with no install.

Are my uploaded files sent to a server?

No. Everything runs only on your own computer, inside your browser, and your files are never sent to a server or anywhere else. So you can use it with complete peace of mind, without worrying about your file contents leaking.