What JSON shape is required?

The top-level value must be an array of plain objects. Each object becomes a row, and the union of keys (in first-appearance order) becomes the header.

How are special characters handled?

Any cell containing a comma, double quote, newline or carriage return is wrapped in double quotes; embedded double quotes are escaped by doubling them (""), per RFC 4180.

What happens to nested objects or arrays?

They are serialized as a JSON string within the cell (and quoted if they contain commas or quotes). This preserves the data so you can parse it back.

Does it preserve key order?

Yes. The header is built by walking each row in order and adding any new keys. If a row is missing a key, the cell is empty.

No. Parsing and CSV generation happen entirely in your browser. Open DevTools → Network and you'll see zero requests.

JSON to CSV

Convert an array of JSON objects into clean CSV — locally.

100% private — no uploads Developer ToolsFree & unlimited Read tutorial

See how it works

Watch a quick simulation of this tool in action — no file needed.

How to use JSON to CSV

Follow these steps — everything happens instantly in your browser.

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Step 1. Paste a JSON array of objects into the input box (try the sample).
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Step 2. Click Convert to CSV — keys are collected from every row in first-appearance order.
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Step 3. Inspect the output, then Copy or Download as data.csv.
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Step 4. Cells containing commas, quotes or newlines are wrapped and escaped automatically.