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Convert.xlsx · .xls

Convert Excel to JSON online

100% localFiles never leave your device — no upload, no account, no tracking.
About Excel to JSON

Turn an Excel sheet into structured JSON — one object per row, keyed by the header columns — ready for APIs and scripts. We parse the workbook locally with SheetJS.

The conversion runs entirely in your browser. Your data never leaves your device.

How it works
  1. 01

    Add a spreadsheet

    Drop your XLSX or XLS file onto the page or pick it from your device.

  2. 02

    Convert

    Click Convert to export the first sheet as JSON locally.

  3. 03

    Download

    Save the JSON file.

Features
structured datadev-friendlyno install
Frequently asked
How does the Excel to JSON converter work?
Turn an Excel sheet into structured JSON — one object per row, keyed by the header columns — ready for APIs and scripts. We parse the workbook locally with SheetJS.
Are my files uploaded to a server?
No. Everything runs entirely in your browser using local JavaScript and WebAssembly. Your files never leave your device.
Does it cost anything or require an account?
No. The converter is free, needs no sign-up, and runs locally in your browser.
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