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JSON to CSV

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Convert a JSON array of objects to CSV.

Runs in your browser — your files and text stay on your device

Convert a JSON array into CSV for a spreadsheet, or turn CSV back into JSON. Nested values are flattened into columns, and values containing commas or quotes are escaped correctly. Conversion happens locally in your browser, so business data isn't uploaded.

Format & ValidateTree ViewJSON DiffJSON → CSVJSON ↔ YAMLJSON ↔ XML→ TypeScriptSchema GeneratorSchema ValidatorJSONPath TesterSort KeysJSON Lines
CSV output

How to use this tool

  1. 1Paste a JSON array of flat objects.
  2. 2CSV is generated automatically with a union header row.
  3. 3Click Copy to grab it.

Frequently asked questions

What happens if objects have different keys?

The header row includes every key found; a missing key gets an empty cell for that row.

Is my data uploaded anywhere?

No, conversion runs entirely in your browser.

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