JSON to CSV

Convert JSON data to CSV format online. Easily export your JSON arrays to standard comma-separated values.

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File is too large. The limit is 100 MB.

Supported: .json (Max 100 MB)

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info About this tool
Convert JSON arrays to CSV format. Simplifies usage of API data in spreadsheet tools.

File size: CSV output is typically similar in size to the JSON source, and often smaller since key names are not repeated per row.

Quality: JSON null values become empty CSV cells. Boolean values (true/false) are exported as strings.

format_list_numbered How to convert
  • 1
    Upload JSON file.
  • 2
    The tool extracts keys as headers.
  • 3
    Download standard CSV file.
help FAQ

What JSON structure is supported?

The converter expects a JSON array of flat objects: [{"key": "value"}, ...]. Arrays of arrays or deeply nested objects are not directly supported.

What if objects have different keys?

All unique keys across all objects are included as columns. If an object doesn't have a particular key, the corresponding cell is empty.

Are nested objects handled?

Nested objects are serialized as JSON strings within a single CSV cell. For complex nesting, consider flattening your JSON before converting.
lightbulb Common use cases
  • check_circle Exporting API response data into Excel or Google Sheets
  • check_circle Loading JSON database exports into PostgreSQL or MySQL via COPY command
  • check_circle Sharing structured JSON data with stakeholders in spreadsheet format
  • check_circle Converting JSON fixtures or seed data back to CSV for editing
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