100% Client-Side · No Upload
JSON to CSV Converter
Transform JSON arrays into clean, spreadsheet-ready CSV files in one click. Headers are automatically extracted from JSON keys.
CSV output will appear here...
How to Convert JSON to CSV
1
Paste JSON Array
Paste a JSON array (e.g. [{"name":"Alice", "age":30}]) into the input editor.
2
Auto-Convert
The tool instantly parses all keys as column headers and maps each object's values into rows.
3
Download CSV
Click 'Download CSV' to get a .csv file you can open in Excel, Google Sheets, or any spreadsheet app.
Frequently Asked Questions
Does my JSON need to be an array?
The input should be a JSON array of objects (like API response data). A single object will also work and produce a single-row CSV.
What happens with nested objects?
Nested objects are serialized as JSON strings inside the CSV cell. For deeply nested data, consider flattening your JSON first.
Is my data private?
Yes. All conversion happens locally in your browser. No data is ever sent to any server.