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Convert between CSV and JSON formats. Easily perform format conversions frequently needed for data analysis and API integration in your browser.
Enter CSV or JSON data in the input area. The format will be automatically detected.
Click the 'Convert to JSON' or 'Convert to CSV' button to perform the conversion.
Review the conversion result and copy it to the clipboard using the 'Copy' button. You can also swap input and output using the 'Swap' button.
CSV-JSON Converter is an online tool that converts between CSV (Comma-Separated Values) and JSON formats. It automates format conversions frequently needed in data analysis and API integration. The first row is automatically treated as headers, and data is converted with appropriate structure. It runs entirely in your browser, so even sensitive data can be processed safely.
Standard CSV with commas as delimiters. The first row is treated as headers. Values containing commas or line breaks should be enclosed in double quotes.
Only object arrays. Simple arrays, single objects, or primitive values cannot be converted to CSV. All objects should have the same keys.
Empty values in CSV become empty strings ("") in JSON. Empty strings in JSON become empty values in CSV.
Values containing commas, double quotes, or line breaks must be enclosed in double quotes. Double quotes inside values are escaped as double double-quotes ("").
No, all processing happens entirely in your browser. Your input data is never sent to any server.