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JSON to CSV

Convert an array of JSON objects into a CSV with a combined header row.

Runs in your browser. Your input is not uploaded or saved.

Result

Add your input, then select Convert to CSV.

How to use it

Paste a JSON array. Top-level keys become columns; nested values remain JSON in their cells.

What to keep in mind

An apostrophe is added to cells that could be interpreted as spreadsheet formulas. Review data types before importing.

Up to 2 MB per input, with smaller limits for complex operations. Clear removes the current input and result. Numbers use JavaScript precision; unsafe integers are rejected.

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