JSON to CSV ConverterTurn JSON records into a clean table.

Open a JSON array, JSON lines (NDJSON) or an object holding a list of records. Fields become columns; nested objects are flattened.
Check the table, filter or sort it, then download CSV — or Excel and Parquet.

Big filesNested fields flattenedNo upload

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Files are read and queried in this browser tab. Nothing is uploaded.

THREE SIMPLE STEPS

How to use the JSON to CSV

Open your JSON

Drop a .json, .ndjson or .jsonl file. Column names and types are found from the records.

Check the table

Browse the rows, drop what you don’t need with filters, or reshape it with SQL.

Download CSV

Save the table as CSV with a header row, or pick Excel, Parquet or JSON.

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JSON to CSV FAQ

Is my JSON uploaded?

No. It is converted in your browser tab and never leaves your device.

How are nested objects handled?

A file that is one object with a list of records ({"data": [...]}) is opened as those records, with nested objects split into columns. Other nested values stay as structured columns; in SQL you can pick fields with column.field or unnest lists.

Does it work with JSON lines?

Yes: .ndjson and .jsonl files with one record per line, which is how large exports are usually written.

Can I choose the columns?

Yes. In SQL, select the columns you want (SELECT id, name FROM data) and download that result.

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