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Excel to JSON converter

Convert an Excel workbook into a JSON array of objects, one object per row, keyed by the header row — or by generic column names if your sheet has no headers. Pick a sheet if there is more than one, preview the result, then copy or download the JSON.

  • Nothing you type leaves this page
  • Works offline once loaded
  • Free forever, no signup
Drop an .xlsx or .xls file here, or tap to choose Nothing is uploaded — parsing happens right here in the tab

How to use this tool

  1. Drop your Excel file

    A sheet selector appears automatically for multi-sheet workbooks.

  2. Toggle the header row and number parsing

    Turn off "first row is headers" if your sheet is headerless data.

  3. Copy or download the JSON

    The output is a ready-to-use array of objects.

Questions people ask

What does each object in the output look like?

One JSON object per data row, with each column header becoming a key — a row with Invoice No, Customer and Amount columns becomes {"Invoice No":"007","Customer":"Aarav Traders","Amount":"25000"}.

What if my sheet does not have a header row?

Turn off "first row is headers" and the tool generates generic keys — Column1, Column2, and so on — from every row of data, including what would otherwise have been treated as the header.

Are numbers kept as numbers or as text?

Text by default — every cell becomes a JSON string exactly as the spreadsheet displayed it, so "007" stays "007" instead of becoming 7. Turn on "parse numbers/booleans" only if your application genuinely needs numeric JSON values.

My workbook has several sheets — which one gets converted?

Whichever one you pick from the sheet selector that appears once a multi-sheet file is loaded; switch sheets and the preview and output update immediately.

Is my spreadsheet uploaded anywhere?

No — the workbook is read and converted entirely in your browser. That matters for a client list or a payroll sheet, which is exactly the kind of file people should not be handing to a random converter site.

Related tools

Bookmark this page — the tool keeps working offline, and your settings stay in this browser. Built by Dynamb Technologies, who make software for a living.