CSV to JSON Converter — Free, Fast & Secure

What is CSV to JSON?

A CSV to JSON Converter is a powerful data transformation tool designed for developers and data analysts who need to bridge the gap between spreadsheet data and web applications. CSV (Comma Separated Values) is the standard format for data export from Excel, Google Sheets, and legacy databases, while JSON (JavaScript Object Notation) is the native language of the web and modern APIs. This tool provides a seamless way to convert your tabular CSV data into structured JSON objects. It handles complex parsing scenarios, including custom delimiters, quoted fields, and header row detection. Whether you are migrating a database, seeding a new application with data, or visualizing spreadsheet data in a web dashboard, this tool automates the conversion process. It processes everything client-side, meaning your large datasets and sensitive financial or user records are never uploaded to the cloud.

Key Features

Who is this for?

How to Use

Examples

id,name,role
1,Alice,Admin
2,Bob,User

[
  {
    "id": "1",
    "name": "Alice",
    "role": "Admin"
  },
  {
    "id": "2",
    "name": "Bob",
    "role": "User"
  }
]

Common Errors

• Mismatched column counts
• Unescaped quotes within fields
• Missing header row
• Inconsistent delimiters

Code Examples

const csv = 'name,age\nAlice,30';
const lines = csv.split('\n');
const headers = lines[0].split(',');
// ... parsing logic

Frequently Asked Questions