The CSV to JSON Converter is a free online tool that transforms CSV (Comma-Separated Values) data into JSON (JavaScript Object Notation) format instantly. Both formats are used extensively for data storage, API communication and data exchange between systems — but different tools and languages prefer different formats. This converter bridges that gap.

CSV is commonly exported from spreadsheet applications like Microsoft Excel and Google Sheets. JSON is the standard data format for web APIs and JavaScript applications. Converting between them is a daily task for developers, data analysts and no-code tool builders.

How to Convert CSV to JSON

• Paste your CSV data into the input field (first row treated as headers by default)
• Or upload a .csv file
• Click Convert to JSON
• View and copy the formatted JSON output
• Choose between array of objects or nested formats

Conversion Options

• First row as headers (column names become JSON keys)
• Custom delimiter support (comma, semicolon, tab)
• Pretty-print or minified JSON output
• Handle quoted values and commas inside fields correctly

Works with large datasets. The tool handles special characters, quoted fields and multi-line values correctly. For the reverse conversion, see our upcoming JSON to CSV tool. Free, no login, no file size limit for paste-in data.