100% in your browser · data never leaves your device

JSON to CSV Converter — Free & Private (In-Browser)

Convert JSON to CSV in your browser. Handles nested objects and arrays of records. Your data is never uploaded. Free and unlimited.

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All free, all private — everything runs in your browser.

How to use JSON to CSV

  1. 1Paste your JSON into the input box, or upload a .json file.
  2. 2Pick how nested arrays and objects should flatten into columns.
  3. 3The CSV output is generated live in your browser as you type.
  4. 4Copy the result or download it as a .csv file.

JSON to CSV FAQ

Is my JSON uploaded to a server?
No. Parsing and CSV generation happen entirely in your browser. Sensitive data like API keys or PII never leaves your device.
What JSON shape does this expect?
An array of objects works best (one row each). A single object becomes one row, and nested arrays are joined into a cell.