CSV Input
JSON Output
Paste or load your CSV/JSON data
Set delimiter and options
Click convert, then copy or download
Transform spreadsheet exports into JSON format for import into JavaScript apps, React state, or NoSQL databases.
Convert JSON API response data or database exports to CSV for analysis in Excel or Google Sheets.
Convert data between CSV (common export format) and JSON (common API format) when migrating between platforms.
Data engineers use this tool to quickly test CSV-to-JSON or JSON-to-CSV transformations before writing automation scripts.
Many charting and visualization libraries (D3.js, Chart.js) expect JSON arrays. Convert your spreadsheet data to JSON here.
No. All conversion happens in your browser. Your data stays private on your device.
Comma, semicolon, and tab delimiters are automatically detected. You can also manually specify the delimiter.
The first row of the CSV is used as property names for the JSON objects. Ensure your CSV has a header row.
Values containing commas should be enclosed in double quotes in the CSV, which the tool handles correctly.
Yes, within the limits of your browser's available RAM. Files up to several MB convert quickly.