Convert CSV to JSON Format

Transform CSV (Comma-Separated Values) files to JSON format instantly with our free online tool. Perfect for data analysts, developers, Excel users, and anyone working with data transformation. Supports custom delimiters, multiple output formats, and bidirectional conversion.

Essential for converting spreadsheet data to web-friendly JSON format, preparing data for APIs, or migrating between different data systems.

Free CSV to JSON Converter

Convert CSV (Comma-Separated Values) files to JSON format instantly with our free online tool. Perfect for data analysts, developers, Excel users, and anyone working with data transformation. Supports custom delimiters, multiple output formats, and bidirectional conversion.

Features

Multiple Delimiters: Comma, semicolon, tab, pipe
Flexible Output: Array of objects, object with keys, pretty print, minified
Bidirectional: Convert CSV to JSON and JSON back to CSV
Download Support: Download converted JSON files
100% Client-Side: All conversion happens in your browser
No File Size Limit: Process large CSV files locally
Privacy-First: Your data never leaves your device

Common Use Cases

Excel to JSON: Export Excel as CSV, convert to JSON
API Development: Convert CSV data for API testing
Data Migration: Transform data between systems
Database Import: Prepare CSV data for NoSQL databases
Web Development: Convert CSV to JSON for JavaScript apps
Data Analysis: Transform data for Python, R, or JavaScript
Configuration Files: Convert CSV configs to JSON

How to Use

1. Paste your CSV data into the input field

2. Select delimiter (comma, semicolon, tab, or pipe)

3. Choose output format (array, object, pretty, or minified)

4. Click "Convert to JSON"

5. Copy or download the JSON output

6. Use "Convert to CSV" to reverse the conversion

CSV Format Example

Input CSV:

name,age,city
John,30,New York
Jane,25,London
Bob,35,Paris

Output JSON (Array of Objects):

[
  {"name": "John", "age": "30", "city": "New York"},
  {"name": "Jane", "age": "25", "city": "London"},
  {"name": "Bob", "age": "35", "city": "Paris"}
]

Supported Delimiters

Comma (,): Standard CSV format
Semicolon (;): European CSV format
Tab (\t): TSV (Tab-Separated Values)
Pipe (|): Alternative delimiter

Output Formats

Array of Objects: Each row becomes an object in an array
Object with Keys: First column values become object keys
Pretty Print: Formatted JSON with indentation
Minified: Compact JSON without whitespace

Why Convert CSV to JSON?

JSON is the standard data format for web APIs and modern applications. Converting CSV to JSON allows you to use spreadsheet data in web applications, APIs, and NoSQL databases. JSON is more flexible than CSV and supports nested structures, making it ideal for complex data.

CSV to JSON Converter