YAML to JSON Converter - Free Online Tool

YAML Input

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Pretty Print Validate Input Indent:

JSON Output

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📁

Drop your YAML or JSON file here or click to browse

Supported formats: .yaml, .yml, .json

Sample Data

Basic YAML

Simple key-value pairs and lists

name: John Doe
age: 30
skills:
  - JavaScript
  - Python

Configuration YAML

Application configuration example

database:
  host: localhost
  port: 5432
logging:
  level: info

Basic JSON

Simple JSON object structure

{
  "name": "Jane Doe",
  "age": 25,
  "active": true
}

Complex JSON

Nested objects and arrays

{
  "users": [
    {"id": 1, "name": "Alice"},
    {"id": 2, "name": "Bob"}
  ]
}

How to Use

🔄 Converting

Choose conversion direction (YAML ↔ JSON)
Paste or type your data in the input area
Click "Convert" to see the result
Copy or download the converted output

📁 File Upload

Drag and drop files onto the upload area
Supports .yaml, .yml, and .json files
Automatically detects file format
Large files are supported

⚙️ Options

Pretty Print: Format output for readability
Validate Input: Check syntax before conversion
Indent Size: Choose spacing for JSON output
Real-time: Convert as you type

📋 Format Information

YAML (YAML Ain't Markup Language)

Human-readable data serialization
Uses indentation for structure
Supports comments
Common for configuration files
File extensions: .yaml, .yml

JSON (JavaScript Object Notation)

Lightweight data interchange format
Uses brackets and braces for structure
No comments allowed
Common for APIs and web applications
File extension: .json

💡 Tips

Indentation: YAML is sensitive to indentation - use consistent spacing
Quotes: YAML strings with special characters should be quoted
Comments: YAML supports comments with #, JSON does not
Validation: Enable validation to catch syntax errors early
Large Files: For very large files, consider using the file upload feature