JSON to CSV Converter

Paste a JSON array and instantly convert it to CSV format. Download or copy—no server, no signup, 100% free.

What is a JSON to CSV Converter?

A JSON to CSV converter transforms structured JSON data—typically an array of objects—into comma-separated values format, which can be opened directly in Excel, Google Sheets, or any spreadsheet application. This free browser-based tool handles the conversion instantly without uploading your data to any server.

How to Convert JSON to CSV

1. Paste your JSON array into the input box above.
2. Click Convert to CSV.
3. Copy the output or download it as a .csv file.

The converter automatically detects column headers from the first object’s keys and maps all rows accordingly. Values containing commas or quotes are properly escaped with double-quotes per the RFC 4180 CSV standard.

Supported JSON Formats

• Array of objects – the most common format: [{"a":1},{"a":2}]
• Single object – wrapped into a one-row CSV automatically.
• Nested values – nested objects are serialized as JSON strings in the cell.

Frequently Asked Questions

Is my data sent to a server?

No. All processing runs entirely in your browser. Your JSON never leaves your device.

What if my JSON has nested objects?

Nested objects and arrays are converted to their JSON string representation in the CSV cell. For deeply nested data, consider flattening the JSON before converting.

Can I convert CSV back to JSON?

This tool converts JSON → CSV. For the reverse direction, use a dedicated CSV to JSON converter.