CSV to JSON

Convert CSV files to JSON format instantly with customizable delimiter and encoding options

Max file size: 10MB
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Free Online CSV to JSON Converter - Fast & Secure

Why Convert CSV to JSON?

Transform your CSV spreadsheet data into JSON format for modern web applications, REST APIs, and JavaScript projects. Our free online converter handles complex CSV files with custom delimiters, multiple encodings, and preserves data structure perfectly.

Perfect for: Web developers, data scientists, API integration, database migration, and front-end applications that consume JSON data.

Powerful Features

  • Smart Delimiter Detection - Comma, semicolon, tab, pipe
  • Multi-Encoding Support - UTF-8, Windows-1251, auto-detection
  • Header Row Detection - Automatic JSON key generation
  • Array or Object Output - Choose your JSON structure
  • Large File Support - Up to 10MB per file
  • 100% Client-Side Processing - Your data stays private

How to Convert CSV to JSON Online

  1. Upload CSV File - Drag & drop or click to select your .csv file
  2. Configure Options - Choose delimiter (comma, semicolon, tab, pipe) and encoding
  3. Set Header Row - Check if first row contains column names for JSON keys
  4. Convert Instantly - Click "Convert to JSON" button
  5. Download Result - Get your formatted JSON file immediately

Pro Tips:

  • Use UTF-8 encoding for international characters
  • Enable "First row contains headers" to use column names as JSON keys
  • Select correct delimiter - most CSV files use comma (,)
  • For Excel exports, try semicolon (;) if comma doesn't work
  • Check your JSON structure before using in production

What is CSV to JSON Conversion?

CSV (Comma-Separated Values) is a simple text format for tabular data, while JSON (JavaScript Object Notation) is a structured data format used extensively in web development and APIs. Converting CSV to JSON transforms flat spreadsheet data into nested, hierarchical objects that are easier to work with in programming.

CSV Format Example:

name,age,city
John,30,New York
Jane,25,London

JSON Format Output:

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

Common Use Cases

  • API Development - Convert CSV data exports to JSON for REST APIs
  • Web Applications - Import CSV data into JavaScript apps
  • Database Migration - Transform spreadsheet data for NoSQL databases
  • Data Analysis - Prepare CSV files for JSON-based analytics tools
  • Configuration Files - Convert CSV settings to JSON config

Security & Privacy

  • No data storage - Files processed in memory only
  • Secure processing - All conversions happen on secure servers
  • Auto-deletion - Files automatically deleted after download
  • No registration - Use the tool anonymously
  • GDPR compliant - Your data privacy is protected

Frequently Asked Questions

Q: Is this CSV to JSON converter free?

A: Yes, completely free with no limits on conversions.

Q: What's the maximum file size?

A: You can convert CSV files up to 10MB in size.

Q: Do I need to install software?

A: No, it's a web-based tool that works in any browser.

Q: Which delimiters are supported?

A: Comma (,), semicolon (;), tab, and pipe (|) delimiters.

Q: Can I convert Excel files?

A: Save your Excel file as CSV first, then convert to JSON.

Q: How do I handle special characters?

A: Use UTF-8 encoding for proper handling of international characters.

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