📊 CSV to JSON Converter

What is a CSV to JSON Converter?

A CSV to JSON converter is a free online tool that transforms CSV (Comma-Separated Values) files into JSON (JavaScript Object Notation) format. CSV files are commonly used in spreadsheets and databases, while JSON is the standard format for web APIs and modern applications.

Why Convert CSV to JSON?

Converting CSV to JSON is essential when working with web development and APIs:

• API Integration - Most modern APIs use JSON format for data exchange
• Web Applications - JavaScript works natively with JSON data structures
• Data Processing - JSON supports nested data better than flat CSV files
• Database Import - NoSQL databases like MongoDB use JSON-like documents
• Configuration Files - JSON is preferred for modern application configs

How to Convert CSV to JSON Online

Using our CSV to JSON converter is simple:

1. Paste your CSV data into the input field or upload a CSV file
2. Choose your delimiter (comma, semicolon, tab, or custom)
3. Select if your CSV has a header row
4. Click "Convert to JSON" to see the formatted JSON output
5. Download the JSON file or copy to clipboard

CSV to JSON Conversion Examples

Here's how CSV data transforms into JSON format:

name,age,city John Doe,30,Hong Kong Jane Smith,25,Tokyo Mike Johnson,35,Singapore

[
  {
    "name": "John Doe",
    "age": "30",
    "city": "Hong Kong"
  },
  {
    "name": "Jane Smith",
    "age": "25",
    "city": "Tokyo"
  },
  {
    "name": "Mike Johnson",
    "age": "35",
    "city": "Singapore"
  }
]

Common CSV to JSON Use Cases

• Excel to API - Export data from Excel/Google Sheets and convert to JSON for APIs
• Database Migration - Convert SQL query results (CSV) to JSON for NoSQL databases
• Data Analysis - Transform CSV datasets into JSON for JavaScript data processing
• Web Development - Convert spreadsheet data to JSON for frontend applications
• Configuration Management - Convert CSV config data to JSON format

Features of Our CSV to JSON Converter

• Multiple Delimiters - Support for comma, semicolon, tab, and custom delimiters
• Header Detection - Automatically use first row as JSON keys or provide custom headers
• File Upload - Upload CSV files directly from your computer
• Large File Support - Handle CSV files with thousands of rows
• Preview Output - See formatted JSON before downloading
• One-Click Download - Export JSON file instantly
• Privacy First - All conversion happens in your browser, no data uploaded

CSV Delimiters Supported

Our converter supports all common CSV delimiters:

• Comma (,) - Standard CSV format
• Semicolon (;) - Common in European CSV files
• Tab (\t) - Tab-separated values (TSV)
• Pipe (|) - Alternative delimiter for special data
• Custom - Specify any character as delimiter

Privacy and Security

All CSV to JSON conversion happens directly in your browser. Your data never leaves your device and is not stored on any server, ensuring complete privacy and security for sensitive data.