What JSON shapes are supported?

An array of objects (most common), an array of arrays, or an object that contains an array — like a typical API response wrapper.

What happens to nested objects?

They are JSON-stringified into the cell. For deeply nested data, flatten it in code first or open the result in OpenCSV to clean it up.

Yes — conversion runs 100% in your browser. Your JSON is never sent to a server.

/ free tool

JSON to CSV Converter

Convert JSON to CSV online for free. Paste a JSON array and download a spreadsheet-ready CSV — all in your browser, no upload.

100% free
Runs in your browser — nothing is uploaded
No signup required

APIs speak JSON, but Excel, Google Sheets, and most reporting tools want CSV. Paste a JSON array of objects here and get a clean CSV with one column per key — ready to open in any spreadsheet.

Nested objects are stringified, arrays of arrays are supported, and if you paste an object that wraps an array (like an API response), the converter finds the array for you. All processing stays in your browser.

Example

Input

[{ "name": "Ada", "city": "London" }]

Output

name,city
Ada,London

Your data never leaves your device

Like everything at OpenCSV, this tool processes files locally in your browser. There is no upload, no server-side processing, and no copy of your data anywhere — which makes it safe for customer lists, financial exports, and other sensitive files.

/ frequently asked

Frequently Asked Questions

An array of objects (most common), an array of arrays, or an object that contains an array — like a typical API response wrapper.

/ more free tools

Keep working with your CSV

Need to view or edit the file first?

OpenCSV is the fastest CSV editor on the web — open, fix, and save any CSV in seconds. $1 lifetime access.

Try OpenCSV free