JSON to Excel (XLSX) Converter
Convert JSON structures into professional Microsoft Excel (.xlsx) workbooks with multi-sheet support, auto column widths, and live spreadsheet preview.
How to Use JSON to Excel (XLSX) Converter
- Paste your JSON data into the editor or upload a .json file.
- Configure workbook options: custom sheet names, column width auto-fit, and nested object flattening.
- Inspect the multi-sheet interactive spreadsheet preview and search or filter rows in real-time.
- Click 'Download Excel (.xlsx)' to save your spreadsheet or copy TSV to paste directly into Excel or Google Sheets.
Key Features & Privacy Guarantee
- Native Microsoft Excel (.XLSX): Generates standard, valid .xlsx workbooks compatible with Excel 2007-2024, Microsoft 365, Google Sheets, and Apple Numbers.
- Multi-Worksheet Generation: Automatically converts JSON objects with multiple arrays into separate worksheet tabs in a single workbook.
- Intelligent Type Inference: Preserves true numbers, booleans, dates, and text strings without converting everything into plain text.
- Auto Column Widths: Automatically calculates character padding for every column so your spreadsheet opens with perfectly sized cells.
- Nested Object Flattening: Deeply nested JSON properties are smoothly flattened into readable column names (e.g. customer.address.city).
- Interactive Sheet Preview: Switch between workbook tabs, search, and inspect rows before exporting.
- 100% Client-Side Privacy: Spreadsheets are created locally in your browser memory via SheetJS. Zero data is ever uploaded.
Frequently Asked Questions
Can I generate multiple worksheets in a single Excel file?
Yes! If you provide a JSON object where each key contains an array of items (e.g. { 'Customers': [...], 'Orders': [...], 'Products': [...] }), our converter creates a dedicated worksheet tab for each key.
Are my confidential company JSON records uploaded anywhere?
No. All parsing, data flattening, and .xlsx binary compression are processed 100% locally in your browser memory using SheetJS. No network requests are made with your data.
How are nested arrays and objects formatted?
Nested objects can be flattened using dot notation (e.g. billing.address.street) or underscore notation. Primitive arrays are joined cleanly for readable spreadsheet presentation.
Does it work with Google Sheets or LibreOffice Calc?
Yes, the generated .xlsx files are standard OpenXML spreadsheets fully compatible with Microsoft Excel, Google Sheets, LibreOffice Calc, and WPS Office.