JSON to Excel Converter

A JSON to Excel Converter transforms JSON array data into Microsoft Excel (.xlsx) spreadsheet files. This tool accepts JSON arrays of objects (most common API response format) or arrays of arrays, parses the data, and generates a downloadable Excel file with proper column headers and data rows. It's perfect for exporting API data, database results, or configuration data to spreadsheets for analysis.

The tool supports: (1) Array of objects — e.g. [{"name":"Alice","age":30}] — where object keys become column headers. (2) Array of arrays — e.g. [["Name","Age"],["Alice",30]] — where the first array is used as column labels. Both formats are auto-detected.

Paste your JSON array into the input area or click Sample to load an example. A preview of the first few rows appears on the right. Click 'Download Excel' to download the .xlsx file. All processing happens in your browser using the SheetJS library.

The generated .xlsx file contains a single sheet (Sheet1) with your data. The first row is the header row (from JSON object keys or the first array). Subsequent rows contain the data values. The file is compatible with Microsoft Excel, Google Sheets, LibreOffice Calc, and any other spreadsheet application.

Yes. All processing happens in your browser using the open-source SheetJS library. Your JSON data never leaves your device and is never sent to any server.

Yes. The tool handles large JSON arrays. The preview shows the first 5 rows, but the downloaded Excel file contains all rows. Performance depends on your device for very large datasets.

Yes, completely free. Also try Excel to JSON, JSON to Markdown, Markdown to Excel, and CSV to Markdown.