CSV to JSON Converter

CSV to JSON converter helps you quickly convert CSV data into structured JSON format. This free online tool is ideal for developers, analysts, and data engineers who need to transform comma-separated values into JSON objects or arrays. Upload or paste your CSV data, and the tool will generate clean JSON output instantly.

Input CSV
JSON Output

1 How to use this tool

  1. Paste your CSV data into the Input CSV editor.
  2. Select your separator (Comma, Semicolon, Tab, Pipe, or Custom).
  3. Or click Upload CSV to load a file from your computer.
  4. The tool will automatically convert the CSV into a JSON array of objects.
  5. Click Copy JSON or Download JSON to get your result.

2 Example

Input CSV

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id,name,email,role,active
1,John Doe,[email protected],Admin,true
2,Jane Smith,[email protected],User,false
3,Bob Johnson,[email protected],Editor,true

JSON Output

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[
    {
        "id": 1,
        "name": "John Doe",
        "email": "[email protected]",
        "role": "Admin",
        "active": true
    },
    {
        "id": 2,
        "name": "Jane Smith",
        "email": "[email protected]",
        "role": "User",
        "active": false
    },
    {
        "id": 3,
        "name": "Bob Johnson",
        "email": "[email protected]",
        "role": "Editor",
        "active": true
    }
]

3 Benefits of using this tool

Automated Mapping

Automatically maps CSV headers to JSON keys for structured output.

Custom Delimiters

Supports various delimiters like commas, semicolons, tabs, and pipes.

Data Type Detection

Intelligently detects numbers, booleans, and null values in your CSV data.

4 Privacy and Security

This tool operates entirely in your browser. Your data is processed locally using JavaScript and is never sent to any external server. You can safely use this tool with sensitive business data.

5 Common Errors

  • Mismatched Quotes

    If your CSV contains quoted fields (e.g., "John, Doe"), ensure quotes are balanced. Unbalanced quotes can break parsing.

  • Incorrect Separator

    Make sure to select the correct separator (comma, semicolon, etc.) matching your input data.

6 FAQ

Can I convert Excel files?

First, save your Excel file as CSV, then upload it here to convert it to JSON.

Related Tools

Need to convert JSON back to CSV? Use our JSON to CSV converter.

Working with PHP? Try our CSV to PHP Array converter.

Want to visualize your CSV data? Check out the CSV to Table Viewer.

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