What JSON format is supported?

Arrays of objects ([{...}, {...}]) are supported. Wrap a single object in an array before converting.

Which sheet is converted in an XLSX file?

The first sheet is automatically selected.

Is the file uploaded to a server?

No, all processing happens in your browser. Files are never sent to any external server.

💻

Developer Tools

Input

JSON Conversion

Convert JSON arrays to CSV or XLSX (Excel) files instantly, or convert CSV/XLSX files back to JSON. Powered by SheetJS, processed entirely in your browser. No data is sent to any server.

How to Use

① Select a conversion direction (JSON→CSV, JSON→XLSX, CSV→JSON, XLSX→JSON). ② For text modes, paste your JSON or CSV into the input field. ③ For XLSX→JSON, upload a file. ④ Click 'Convert' to see the result or download.

When to Use

• Converting API response JSON to Excel for sharing with teammates • Transforming database export JSON into CSV for analysis • Converting Excel data to JSON for development use • Turning CSV data into JSON API format

Frequently Asked Questions

Q. What JSON format is supported?: A. Arrays of objects ([{...}, {...}]) are supported. Wrap a single object in an array before converting.
Q. Which sheet is converted in an XLSX file?: A. The first sheet is automatically selected.
Q. Is the file uploaded to a server?: A. No, all processing happens in your browser. Files are never sent to any external server.