Data Converters

JSON to CSV Converter

Paste JSON and turn it into CSV for spreadsheets, reports, or quick review. The tool supports a single object, an array of objects, and optional flattening for nested fields.

Flattens nested objects Browser-only Copy or download .csv
JSON CSV
Paste JSON below, or drop a file
Options

Converted entirely in your browser — your data never leaves your device

How to use it

  1. 1 Paste a JSON object or an array of objects.
  2. 2 Enable flattening if nested object fields should become separate columns.
  3. 3 Run the converter and review the CSV output.
  4. 4 Copy the result or download it as a .csv file.

Use cases

  • Move API samples into a spreadsheet
  • Share structured JSON data with non-developer teammates
  • Create CSV fixtures from JSON test data

Limitations

  • Arrays inside fields are serialized as JSON text.
  • CSV has no native type information, so numbers, booleans, and dates may need review after export.
  • Very large JSON files depend on browser memory.

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FAQ

Does JSON to CSV upload my data?

Your file or text is processed in your browser and is not uploaded.

What JSON shapes are supported?

The tool accepts a single object or an array of objects. Other JSON values are rejected because they do not map cleanly to CSV rows.

How are nested objects handled?

Use the flatten option to turn nested fields into dot-path columns such as user.name.