JSON to CSV Converter

Convert JSON to CSV and CSV back to JSON instantly — free, private, in your browser.

JSON input

CSV delimiter

Flatten nested objects (address.city)

CSV output

🔒 Private by design: this tool runs 100% in your browser — nothing is uploaded anywhere.

Free JSON to CSV converter

Convert JSON to CSV for spreadsheets, or CSV back to JSON for code. Nested objects flatten to dot-notation columns (address.city), commas and quotes are escaped properly, and everything runs in your browser.

How to use

Paste your JSON or CSV into the input box.
Pick the direction and options (delimiter, flattening, header row).
Tap Convert, then copy or download the result.