Excel to JSON

Convert Excel spreadsheets (XLSX) to JSON format online. Export your data to machine-readable JSON for web development.

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Supported: .xlsx, .xls (Max 100 MB)

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info About this tool
Export your Excel data to machine-readable JSON format. Useful for web developers and data migration.

File size: JSON output is typically 60–80% smaller than the source XLSX file.

Quality: Only the first worksheet is exported. Formulas are replaced by their calculated values. Empty rows are skipped.

format_list_numbered How to convert
  • 1
    Upload your Excel sheet.
  • 2
    Convert rows to JSON objects.
  • 3
    Download the resulting .json file.
help FAQ

What format does the JSON output use?

The output is a JSON array of objects: [{"Column1": "value", "Column2": "value"}, ...]. Each row becomes one object, and column headers become keys.

How are numbers and dates handled?

Numeric cells are exported as JSON numbers. Excel date serials are converted to ISO date strings (YYYY-MM-DD).

What if my sheet has no header row?

The first row is always used as the key names. If your data has no headers, the first data row will be treated as keys.
lightbulb Common use cases
  • check_circle Importing business data from Excel into a web app or database
  • check_circle Creating static JSON data files for front-end development
  • check_circle Migrating CRM or inventory data to JSON-based systems
  • check_circle Generating mock API responses from spreadsheet data
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