CSV to JSON Converter Online - Convert CSV to JSON Array

Input CSV

144 characters

Converted JSON

[
  {
    "id": 1,
    "name": "Aakash Sharma",
    "role": "Developer",
    "city": "San Francisco",
    "active": true
  },
  {
    "id": 2,
    "name": "Elena Rostova",
    "role": "Designer",
    "city": "Berlin",
    "active": false
  },
  {
    "id": 3,
    "name": "Kenji Sato",
    "role": "Product Lead",
    "city": "Tokyo",
    "active": true
  }
]

359 output characters100% In-Browser

Key Benefits & Core Capabilities

Smart Type Casting

Automatically detects and parses numbers, booleans (true/false), and null values rather than converting everything to strings.

Custom Delimiter Support

Parses Comma (CSV), Semicolon (;), and Tab-Separated (TSV / Excel paste) tables.

Formatted or Minified JSON

Export as beautifully indented JSON or compact single-line JSON strings.

Client-Side Security

Convert sensitive financial spreadsheets and customer lists locally with 100% privacy.

How It Works & Technical Architecture

The CSV to JSON Converter employs an RFC 4180-compliant tokenizer that handles complex multiline quoted fields, escaped quotes, and delimiter variations.

It extracts the first line as column keys and maps subsequent row tokens into JavaScript object properties.

Our type inference engine evaluates each field, converting numeric strings to numbers and boolean tokens to primitives before serializing the array with JSON.stringify().

Practical Use Cases & Applications

Pasting Excel Data into Code

Copy cells directly from Excel or Google Sheets and paste to get instant structured JSON.

Database Seeding & Migration

Convert legacy CSV database exports into JSON documents for MongoDB, Firestore, or PostgreSQL JSONB.

Frontend Mock Data Creation

Quickly create rich JSON fixture files for React, Vue, and Angular UI components.

Configuration Table Conversion

Transform feature flag and pricing matrix spreadsheets into readable JSON configuration files.

Frequently Asked Questions

Can I copy and paste table cells directly from Google Sheets or Excel?

Yes. Simply copy your spreadsheet cells and paste them directly into the input area; the tool will parse the tab-delimited data automatically.

Does the tool convert numbers and booleans into actual data types?

Yes. With "Auto-Detect Data Types" enabled, numbers like 42 and booleans like true are converted to native JSON numbers and booleans instead of quoted strings.

How does it handle quoted text containing commas?

Softnag uses an RFC 4180-compliant state machine parser that correctly handles quoted strings containing commas and line breaks.

Are my confidential spreadsheets uploaded to any server?

No. All parsing runs entirely within your browser client.

Can I download the output as a .json file?

Yes. You can copy the formatted JSON or download it as a standalone .json file with one click.

Does it parse quoted values with commas?

Yes, Softnag supports standard RFC 4180 escaped quotes and comma-separated tokens.

CSV to JSON Converter

Who Is CSV to JSON Converter Built For?