onul.works

JSON to CSV

Convert JSON to CSV and prepare spreadsheet-ready output from object arrays.

⌘ Runs in browser ◴ No data stored ⌁ Free
JSON input
CSV output

How to use

  1. 1 Paste or enter JSON data in array form.
  2. 2 Click convert to CSV to create a tabular result.
  3. 3 Copy the CSV output or download it as a file.

Common use cases

  • Convert JSON object arrays to CSV
  • Use a browser-based JSON to CSV converter
  • Turn API response samples into table data
  • Download converted CSV files

Frequently asked questions

What JSON input can be converted to CSV?

You can enter an array of objects or a single object. The JSON to CSV converter handles a single object like a one-row array.

How are CSV headers chosen?

The tool collects all keys found in the input objects as headers, and object or array values are stringified inside cells.

Can I copy or download the result?

Yes. You can copy the converted CSV or download it as a converted.csv file.

Related workflow

JSON to CSVUse the JSON to CSV converter to flatten API responses or object arrays for spreadsheet review. → CSV to JSONRound-trip the CSV back into JSON when you need to check that the structure still looks right. → cURL ConverterPrepare the matching request code when the cleaned data belongs in an API example.