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iToolVersev2.2

CSV to JSON Converter

Convert CSV files or text to JSON format with flexible input options

Easily convert CSV (Comma-Separated Values) data to JSON (JavaScript Object Notation) format by uploading a file or pasting content directly. Our converter handles large files and provides customizable output formatting options.

CSV Input

Paste your CSV content or upload a CSV file

JSON Output

Converted JSON data will appear here

CSV to JSON Conversion Examples

See how different CSV formats are converted to JSON with various settings

User Data with Header

Common
Settings: Comma delimiter, Header row: Yes, Convert types: Yes

CSV Input:

name,age,email,active
John Doe,28,john@example.com,true
Jane Smith,34,jane@example.com,false

JSON Output:

[
  {
    "name": "John Doe",
    "age": 28,
    "email": "john@example.com",
    "active": true
  },
  {
    "name": "Jane Smith",
    "age": 34,
    "email": "jane@example.com",
    "active": false
  }
]

Product Inventory

Semicolon
Settings: Semicolon delimiter, Header row: Yes, Convert types: Yes

CSV Input:

product_id;name;price;in_stock
101;Laptop;999.99;true
102;Mouse;25.50;false
103;Keyboard;75.00;true

JSON Output:

[
  {
    "product_id": 101,
    "name": "Laptop",
    "price": 999.99,
    "in_stock": true
  },
  {
    "product_id": 102,
    "name": "Mouse",
    "price": 25.5,
    "in_stock": false
  }
]

Sales Data with Quotes

Quoted Fields
Settings: Comma delimiter, Header row: Yes, Handles quoted fields

CSV Input:

customer,"product_name",amount,date
"Smith, John","Premium Package",1500,"2024-01-15"
"Johnson, Mary","Basic Plan",500,"2024-01-16"

JSON Output:

[
  {
    "customer": "Smith, John",
    "product_name": "Premium Package",
    "amount": 1500,
    "date": "2024-01-15"
  },
  {
    "customer": "Johnson, Mary",
    "product_name": "Basic Plan",
    "amount": 500,
    "date": "2024-01-16"
  }
]

No Header Columns

No Header
Settings: Comma delimiter, Header row: No, Auto-generated column names

CSV Input:

Alice,25,Engineer
Bob,30,Designer
Carol,28,Manager

JSON Output:

[
  {
    "column1": "Alice",
    "column2": 25,
    "column3": "Engineer"
  },
  {
    "column1": "Bob",
    "column2": 30,
    "column3": "Designer"
  },
  {
    "column1": "Carol",
    "column2": 28,
    "column3": "Manager"
  }
]

Mixed Data Types

Mixed Types
Settings: Comma delimiter, Converts numbers, booleans, and null values

CSV Input:

id,name,score,passed,notes
1,Alice,95.5,true,null
2,Bob,87.2,true,"Excellent work"
3,Carol,null,false,"Needs improvement"

JSON Output:

[
  {
    "id": 1,
    "name": "Alice",
    "score": 95.5,
    "passed": true,
    "notes": null
  },
  {
    "id": 2,
    "name": "Bob",
    "score": 87.2,
    "passed": true,
    "notes": "Excellent work"
  },
  {
    "id": 3,
    "name": "Carol",
    "score": null,
    "passed": false,
    "notes": "Needs improvement"
  }
]

Tab Separated Values

Tab Delimited
Settings: Tab delimiter (\t), Header row: Yes, Convert types: Yes

CSV Input:

name	department	salary	start_date
John	Engineering	75000	2023-01-15
Sarah	Marketing	65000	2023-03-01

JSON Output:

[
  {
    "name": "John",
    "department": "Engineering",
    "salary": 75000,
    "start_date": "2023-01-15"
  },
  {
    "name": "Sarah",
    "department": "Marketing",
    "salary": 65000,
    "start_date": "2023-03-01"
  }
]

About CSV to JSON Conversion

What is CSV?

CSV (Comma-Separated Values) is a simple file format used to store tabular data, where each line represents a row and commas separate each field.

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write and easy for machines to parse and generate.

Conversion Features

  • Custom delimiter support (comma, tab, semicolon, etc.)
  • Header row support for naming JSON properties
  • Dynamic type conversion (strings to numbers, booleans, null)
  • Value trimming to remove unwanted spaces
  • Support for quoted fields containing delimiters

What is a CSV to JSON Converter?

A CSV to JSON converter is a tool that transforms tabular data stored in CSV (Comma-Separated Values) format into JSON (JavaScript Object Notation) format. This conversion is essential for modern web development, data processing, and API integration where JSON is the preferred data exchange format.

CSV Advantages

  • • Simple tabular format
  • • Widely supported by spreadsheet software
  • • Compact file size
  • • Easy to read and edit manually
  • • Universal compatibility
  • • Perfect for data export/import

JSON Advantages

  • • Structured key-value pairs
  • • Native JavaScript support
  • • Supports nested objects and arrays
  • • Preserves data types
  • • API-friendly format
  • • Human-readable structure

Frequently Asked Questions

Data Processing Tips

Before Converting

Check Delimiter: Ensure you know what character separates your fields

Header Row: Verify if your first row contains column names

Data Types: Consider if you want automatic type conversion

Quoted Fields: Note any fields that contain the delimiter character

File Encoding: Ensure your CSV uses UTF-8 encoding for special characters

After Converting

Validate Output: Check the JSON structure matches your expectations

Data Types: Verify numbers and booleans converted correctly

Special Characters: Ensure Unicode characters are preserved

Null Values: Check empty fields are handled as intended

Save Backup: Keep your original CSV file as a backup

Common Use Cases

Web Development

Convert spreadsheet data to JSON for use in web applications, databases, or API endpoints.

Data Migration

Transfer data between systems that support different formats, from legacy CSV to modern JSON.

API Integration

Prepare CSV data for REST APIs or web services that expect JSON format input.

Data Analysis

Convert CSV exports from analytics tools to JSON for processing in JavaScript applications.

Configuration Files

Transform CSV configuration data into JSON format for application settings and configs.

Database Import

Prepare CSV data for NoSQL databases like MongoDB that prefer JSON document format.