JSON to CSV Converter

Convert JSON arrays to CSV

JSON arrays of objects convert naturally to CSV because object keys become column headers. Arrays of arrays are also supported with generated column names, and nested values are preserved as compact JSON text inside cells.

The converter runs locally and gives a clear error when the input is invalid or when the root value is not an array.

Useful workflows

• Export a small API response into a CSV file for spreadsheet review.
• Turn JSON fixture data into rows for a quick table.
• Copy CSV output into documentation, tests, or a simple report.

Related data tools

For the reverse direction, use the CSV to JSON Converter. If the input fails, check it with the JSON Validator. To inspect rows before export, open the JSON Viewer.

FAQ

What JSON input works best?

A JSON array of objects works best because object keys become CSV columns.

Can it convert arrays of arrays?

Yes. Each nested array becomes a CSV row with generated column names.

How are nested values handled?

Objects and arrays inside cells are stringified as compact JSON values.

Can I download the CSV?

Yes. Convert the JSON, then use the download button to save the CSV file.

Is the JSON uploaded?

No. Conversion happens in your browser.