CSV to JSON Converter

Professional CSV to JSON Conversion

The CSV to JSON Converter transforms CSV (Comma-Separated Values) data into JSON (JavaScript Object Notation) format, making it compatible with modern APIs, web applications, and data processing tools. This free online converter intelligently detects delimiters, handles quoted values, and offers multiple output formats for maximum flexibility.

Why Convert CSV to JSON?

Key Features

• ✓Auto-Detect Delimiter: Automatically identifies whether your CSV uses commas, semicolons, tabs, or pipes as delimiters.
• ✓Custom Delimiter Options: Override auto-detection with manual delimiter selection for precise control.
• ✓First Row as Headers: Toggle whether the first row contains column headers that become JSON object keys.
• ✓Multiple Output Formats: Choose between array of objects (standard) or array of arrays for different use cases.
• ✓Quoted Value Handling: Correctly processes CSV values enclosed in quotes, including escaped quotes and delimiters within quotes.
• ✓Number Detection: Automatically converts numeric strings to JSON numbers for proper data typing.
• ✓Pretty Printing: Outputs formatted JSON with indentation for easy reading and debugging.
• ✓One-Click Copy: Copy generated JSON to clipboard with a single click.
• ✓File Download: Download converted JSON as a .json file ready for use in applications.

Common Use Cases

Excel/Spreadsheet Export: Convert data exported from Excel, Google Sheets, or other spreadsheet applications to JSON for web applications.

Database Migration: Transform CSV database exports to JSON for importing into NoSQL databases or modern data stores.

API Testing: Convert CSV test data to JSON for use in API request bodies, mock servers, and testing frameworks.

Data Visualization: Transform CSV datasets to JSON for use with charting libraries like D3.js, Chart.js, and Highcharts.

Configuration Files: Convert CSV configuration data to JSON for modern application config systems.

How to Use the CSV to JSON Converter

1. 1.Paste your CSV data into the input area. The delimiter will be auto-detected, or you can select it manually.
2. 2.Configure conversion options: choose output format, specify whether first row contains headers.
3. 3.Click "Convert to JSON" to transform your CSV. The conversion happens instantly in your browser.
4. 4.Review the JSON output and download the file or copy to clipboard for use in your project.

Output Format Options

[
  {
    "name": "John Doe",
    "email": "john@example.com",
    "age": 30
  },
  {
    "name": "Jane Smith",
    "email": "jane@example.com",
    "age": 28
  }
]

[
  ["name", "email", "age"],
  ["John Doe", "john@example.com", 30],
  ["Jane Smith", "jane@example.com", 28]
]

Delimiter Detection

The converter automatically detects the delimiter used in your CSV file by analyzing the first line. Supported delimiters:

• •Comma (,): Standard CSV format used by most applications
• •Semicolon (;): Common in European locales where comma is used as decimal separator
• •Tab (\t): TSV (Tab-Separated Values) files exported from databases and spreadsheets
• •Pipe (|): Alternative delimiter used in data processing and database exports

Advanced Features (Premium)

Premium users get access to advanced capabilities for handling large-scale and complex CSV to JSON conversions:

• •Large File Support: Convert CSV files up to 50MB (free tier limited to 5MB).
• •Schema Definition: Define custom schemas with data types, validation rules, and transformations.
• •Advanced Type Detection: Automatic detection of dates, booleans, null values, and complex types.
• •Custom Transformations: Apply custom JavaScript transformations during conversion.
• •Batch Processing: Convert multiple CSV files simultaneously with consistent settings.

Best Practices

Privacy and Security

All CSV to JSON conversion happens entirely in your browser using JavaScript. Your data never leaves your device, never touches our servers, and is never stored or logged anywhere. This ensures complete privacy and security for sensitive business data, personal information, or proprietary datasets.

Frequently Asked Questions