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JSON <-> CSV Converter

JSON (Array)

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Convert JSON data to CSV format and vice versa.

CSV

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About the JSON CSV

Convert JSON data to CSV format and back. Perfect for exporting API data for spreadsheets or importing CSV data into JSON-based systems.

Paste JSON to get CSV, or paste CSV to get JSON. Handles nested objects and arrays with configurable flattening.

  • Converts JSON to CSV and CSV to JSON
  • Flattens nested objects automatically
  • Configurable delimiter and quoting
  • Handles arrays of objects or single objects

How to use

  1. Paste your JSON or CSV data.
  2. The converted output appears instantly.
  3. Copy or download the result.

Frequently Asked Questions

How do I convert a nested JSON array to CSV? ▾

Paste the JSON and the converter flattens nested objects into dot-notation columns (user.name → user.name) so every record fits the CSV grid. Arrays of objects work best; a single object is wrapped as one row.

Does CSV conversion handle commas and quotes in my data? ▾

Yes — values containing commas, quotes, or newlines are wrapped and escaped per RFC 4180, so the exported CSV opens correctly in Excel, Sheets, and pandas.

Is there a size limit for JSON to CSV conversion? ▾

The limit is your browser memory, not a server — files into the tens of megabytes convert fine locally. Nothing is uploaded, so large customer exports never leave your machine.