Convert between CSV and JSON formats
CSV to JSON Converter is a free online tool that transforms CSV (Comma-Separated Values) data into JSON format. This conversion is essential for developers who need to use spreadsheet data in web applications, APIs, or databases that work with JSON.
Our converter handles various CSV formats including custom delimiters, quoted fields, and different line endings. The conversion happens instantly in your browser with no file upload required.
Convert CSV files to JSON format instantly with automatic header detection and data mapping.
Support for comma, semicolon, tab, and custom delimiters to handle any CSV format.
Get beautifully formatted JSON with proper indentation, ready for use in your applications.
All processing happens locally in your browser. Your data stays on your device.
Simply paste your CSV data into the input area, select the appropriate delimiter if needed, and click Convert. The tool automatically uses the first row as headers and creates a JSON array of objects.
We support standard CSV with comma delimiters, as well as TSV (tab-separated), semicolon-separated (common in European Excel exports), and custom delimiters. Quoted fields and multi-line values are also handled correctly.
Yes, the tool can handle large CSV files efficiently. Since processing happens in your browser, performance depends on your device's capabilities, but most modern browsers can handle files with thousands of rows without issues.