Data Converter

JSON to CSV Converter

Turn arrays of JSON objects into clean, spreadsheet-ready CSV in one click — fully in your browser.

100% In-Browser & PrivateNo uploadsFree forever

Converting JSON to CSV is one of the most common data-prep chores, and MyJSONPal makes it instant and private. Paste an array of objects and the converter flattens every record into a row, generating a header row from the union of all keys. No server round-trip — the conversion runs locally, so sensitive datasets stay on your machine.

Values are quoted correctly per the CSV standard: fields containing commas, quotes, or line breaks are wrapped in double quotes with inner quotes escaped, so the output opens cleanly in Excel, Google Sheets, and every modern data tool. Nested objects are encoded as compact JSON strings inside their cells, keeping the file lossless.

Paste raw JSON, click the CSV format, and copy or download your result. For arrays of primitives the converter produces a single-column table; a single object becomes a one-row table.

How to convert JSON to CSV

  1. 1Paste an array of JSON objects into the input editor, or drag and drop a .json file.
  2. 2Select CSV from the format dropdown — the conversion happens instantly.
  3. 3Preview the comma-separated output with the column header auto-generated from your keys.
  4. 4Copy the CSV to your clipboard or download it as a .csv file.
  5. 5Open the file in Excel, Google Sheets, or your favorite data tool.

Why MyJSONPal is different

Privacy-first, by design

All parsing, validation and conversion runs in your browser. Your data is never sent, logged, cached or sold — close the tab and it is gone.

Fast, even on huge files

Heavy processing is offloaded to a Web Worker, so multi-megabyte documents are handled without freezing the interface.

No accounts, no limits

There is nothing to sign up for and no usage quota. Paste, format, convert and download as often as you like.

Frequently asked questions

Does the CSV include a header row?

Yes. The header is built from the union of every key across all objects, so columns are preserved even when some records are missing fields.

How are nested objects converted?

Nested objects and arrays are serialized as compact JSON strings inside their cell. This keeps the data lossless and avoids flattening ambiguity.

Will special characters break the CSV?

No. Fields containing commas, double quotes, or newlines are wrapped in quotes and inner quotes are doubled, following the standard RFC 4180 conventions that Excel and Sheets expect.

Can I convert a large JSON file?

Yes — conversion runs in a Web Worker so large payloads are processed without freezing the page. The limit is whatever your browser can comfortably parse.

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