JSON/CSV Converter

For JSON to CSV conversion, the input must be a JSON array of objects. Each object becomes a row, and object keys become column headers.

CSV is a flat format and cannot represent nested structures directly. Nested objects will be serialized as strings in the CSV output. For complex nested data, consider flattening the JSON first.

Yes. The first row of the CSV output contains the column headers, derived from the keys of the JSON objects.

The first row is treated as column headers. Each subsequent row becomes a JSON object where the keys are the header values and the values are the cell contents.

Yes. Copy the CSV output and paste it into any spreadsheet application, or save it as a .csv file and open it directly in Excel or Google Sheets.

No. All conversion is performed entirely in your browser. No data is ever uploaded or transmitted.