JSON to Excel online: free, private, no upload
Convert JSON data to an XLSX file.
How it works
- 1
Drop your .json file.
- 2
Convert it.
- 3
Download the XLSX file.
Turn a JSON array of objects (or arrays) into an Excel workbook with one column per key. Handy for API responses and exports, converted locally in your browser.
Turn a JSON array of objects (or arrays) into an Excel workbook with one column per key. Handy for API responses and exports, converted locally in your browser. Spreadsheets are read and converted locally in your browser, so sensitive data never leaves your device. Nested objects are written as JSON text in a cell.
What people use it for
- JSON to Excel for exports, reports and data clean-up.
- Move data between spreadsheets, apps and APIs.
- Process financial or customer data privately.
Tips for best results
- Nested objects are written as JSON text in a cell.
- Remove empty rows and merged cells first for the cleanest output.
- Large workbooks may take a moment to process.
Your files never leave your device
Unlike most online PDF tools, Intelli File does not upload your documents to a server. Everything runs in your browser using your own device, so contracts, IDs and financial records stay private. Only a small usage counter is sent so we can apply daily limits.
Read how we handle privacyWhat to do next
After this, you may want to Excel to JSON, CSV to Excel, or Excel to CSV.
Frequently asked questions
What JSON shape is supported?+
An array of objects, an array of arrays, or an object whose values are such arrays (one sheet per key).
Are my files uploaded anywhere?+
No. The conversion runs inside your browser, so your file never leaves your device.
Is it free?+
Free accounts get a few tasks per day; sign up for more, or go Pro for unlimited use and larger files.
Is there a file size limit?+
Files are processed on your device, so the practical limit is your browser's memory. Nested objects are written as JSON text in a cell.
Does it work on my phone?+
Yes. Modern mobile browsers run this tool, although large files are faster on a computer.