Convert JSON to Excel - Free JSON to XLSX Converter Online
Convert JSON arrays and objects to Excel .xlsx files online. Download spreadsheet-ready XLSX from JSON data instantly, no upload, no server.
Array of objects / Array of arrays / Single object
Paste JSON and click Convert. Each array element becomes a row. Nested objects are serialized as JSON strings in cells.
JSON Input
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Excel Output
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How to Convert JSON to Excel Online
Paste your JSON array, object, or API response into the input, or upload a .json file.
Optionally set a custom sheet name for the Excel workbook.
Click Convert to generate the Excel .xlsx file instantly in your browser.
Click Download to save the .xlsx file to your device.
Why Use This JSON to Excel Converter
True .xlsx Output
Generates a real Excel .xlsx file using SheetJS, not a renamed CSV. Opens natively in Excel, Google Sheets, and Numbers.
Private Browser-Based Processing
Your JSON never leaves your device. All conversion happens client-side with no server upload.
Flexible JSON Support
Supports arrays of objects, arrays of arrays, single objects, and primitive values. Nested structures are serialized as JSON strings.
FAQ
What JSON structures are supported?
Arrays of objects, arrays of arrays, single objects, and primitive values. Nested structures become JSON strings in cells.
Is the output a real .xlsx file?
Yes. The converter uses SheetJS to produce a proper Excel .xlsx workbook, not a CSV with an .xlsx extension.
Is my data uploaded to a server?
No. Everything runs locally in your browser so your data stays on your device.