About

CSV to JSON

Convert CSV data to JSON format with automatic header detection

CSV Input0 chars
JSON Output0 chars

Enter CSV and click Convert to generate JSON

About This Tool

CSV to JSON is a free online tool that converts CSV (Comma-Separated Values) data to JSON format. CSV is one of the most widely used data formats in the world, serving as the standard export format for spreadsheets, databases, and legacy systems. JSON, on the other hand, is the standard format for modern web APIs, NoSQL databases, and JavaScript applications. Bridging these two formats is a common task in data integration workflows, backend development, and data migration projects. This tool automatically detects headers from the first row and converts each subsequent row into a JSON object. It handles quoted fields, escaped characters, and various CSV formats seamlessly. All processing happens in your browser — your data is never sent to any server.

How to Use

  1. Paste your CSV data into the input area, or upload a CSV file.
  2. The tool automatically detects the header row and parses the data.
  3. The JSON output appears in the output area.
  4. Click 'Copy' to copy the JSON to your clipboard, or 'Download' to save it.
  5. Use 'Clear' to reset and start over.

Frequently Asked Questions

Yes. The parser correctly handles CSV fields enclosed in quotes, including fields that contain commas or line breaks within quotes.
The tool assumes the first row contains headers. If your CSV has no headers, the first row will be used as property names. You can edit the output if needed.
Currently the tool supports comma-separated values. For tab-separated or semicolon-separated data, you may need to convert it first.
Yes. All processing happens entirely in your browser using client-side JavaScript. Your CSV data is never transmitted to any server, stored anywhere, or shared with third parties. Your sensitive data remains completely private throughout the conversion process.
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