CSV ↔ JSON Converter
Convert CSV to JSON or JSON arrays to CSV. Handles headers automatically. Upload files or paste directly.
CSV Input
JSON Output
JSON output will appear here
CSV to JSON Converter
Paste CSV text or upload a .csv file to convert it to a pretty-printed JSON array. Switch directions to convert a JSON array back to CSV for spreadsheet compatibility. Headers are handled automatically. Powered by PapaParse running entirely in your browser.
Frequently Asked Questions
- Does it handle CSV headers automatically?
- Yes. The first row of the CSV is used as property names in the resulting JSON objects.
- Can I upload a .csv file?
- Yes. Use the Upload button in the toolbar to select a .csv or .txt file. The content is read locally in your browser — it is not uploaded to any server.
- What JSON structure is required for JSON to CSV conversion?
- The input must be a JSON array of objects. Each object becomes a row and the keys of the first object become the CSV headers.
- Are number and boolean types preserved?
- When converting CSV to JSON, the parser automatically detects numbers and booleans using dynamic typing. When converting JSON to CSV, values are serialised as-is.
- Is my data safe?
- Yes. All conversion is performed in your browser using the PapaParse library. No data is sent to any server.