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Excel ⇄ CSV

Convert XLSX/ODS sheets to CSV or JSON, and CSV to Excel.

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Runs locally in your browser. Your files are never uploaded.

About this tool

Turn spreadsheets into CSV or JSON, one file per sheet, with a preview. You can also turn CSV data into a real .xlsx file, all without uploading.

How to use it

  1. Drop a spreadsheet (or paste CSV).
  2. Pick the sheet and output format.
  3. Download.
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