Turn JSON arrays into CSV or CSV into JSON with header detection. Fully client-side — no account, uploads, or remote storage.
Added Apr 29, 2026
Input
Result
Enter a value for json array to see your result.
Converts a JSON array of objects into CSV (Comma-Separated Values) format. The first row becomes the header row using all unique keys found across the objects. Useful for exporting data to spreadsheets.
Each object becomes a row; unique keys become column headers.
Inputs
Result
Nested objects and arrays are converted to their JSON string representation in the CSV cell. For full nested support, flatten your JSON first.
Yes — copy the CSV output and paste into Excel or Google Sheets. If your locale uses semicolons as decimal separators, choose the semicolon delimiter.