JSON to CSV
Convert JSON arrays to CSV.
Runs entirely in your browser — nothing you enter is uploaded, logged, or tracked.
Paste a JSON array of objects to get clean CSV — the keys become the header row, nested objects are flattened with dotted column names, and values with commas or quotes are escaped correctly. Copy it or download a .csv ready for Excel or Google Sheets.
Frequently asked questions
What JSON shape does it expect?
An array of objects, e.g. [{"name":"Ada","age":36}, …]. The union of all keys becomes the columns; missing values are left blank.
How are nested objects handled?
They are flattened into dotted columns (address.city), and arrays are JSON-encoded into the cell so no data is lost.
Is my data uploaded?
No — the conversion runs entirely in your browser.