Excel to JSON online: free, private, no upload
Convert a spreadsheet to JSON.
How it works
- 1
Drop your spreadsheet.
- 2
Choose how rows are exported.
- 3
Download the JSON file.
Convert Excel, ODS or CSV data to JSON. Use the first row as keys to get an array of objects, or export plain arrays. Great for developers and data work, and fully private.
Convert Excel, ODS or CSV data to JSON. Use the first row as keys to get an array of objects, or export plain arrays. Great for developers and data work, and fully private. Spreadsheets are read and converted locally in your browser, so sensitive data never leaves your device. Dates are exported as their displayed text.
What people use it for
- Excel to JSON for exports, reports and data clean-up.
- Move data between spreadsheets, apps and APIs.
- Process financial or customer data privately.
Tips for best results
- Dates are exported as their displayed text.
- 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 JSON to Excel, Excel to CSV, or CSV to Excel.
Frequently asked questions
Which sheet is exported?+
Every sheet is exported, as a separate key in one JSON file.
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. Dates are exported as their displayed text.
Does it work on my phone?+
Yes. Modern mobile browsers run this tool, although large files are faster on a computer.