Excel Converter

Runs locally

Convert Excel (xlsx/xls/csv) to JSON or CSV, and paste JSON/CSV data to generate an Excel file — parsed locally.

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This tool runs locally in your browser — your content is never uploaded to a server.

How to use

  1. 1.Excel → JSON/CSV: upload an .xlsx, .xls or .csv file (pick a sheet if there are several).
  2. 2.Preview the first rows, then click “Download .json” or “Download .csv”.
  3. 3.JSON/CSV → Excel: paste a JSON array or CSV text.
  4. 4.Click “Download .xlsx” to generate the Excel file.

FAQ

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