Convert YAML to JSON

Transform YAML configuration files into JSON format for APIs and web applications

From: YAML

To: JSON

YAML Input

JSON Output

How to Convert YAML to JSON

Paste YAML Data

Enter your YAML configuration or data. Supports nested objects, arrays, and comments.

Parse and Convert

The converter parses your YAML structure and transforms it into valid JSON format.

Use JSON Data

Copy the JSON output or download it for use in your APIs, web apps, and data processing.

Why Convert YAML to JSON?

API Integration

Convert YAML configuration data to JSON for sending to REST APIs and web services.

Web Applications

Transform YAML configs into JSON for use in JavaScript applications and frontend frameworks.

Data Processing

Convert YAML data to JSON for processing in data pipelines and analytics workflows.

Cross-Platform

JSON has universal support across programming languages and platforms for data interchange.

YAML to JSON Conversion Example

See how YAML configuration is transformed into JSON format

YAML Input

# Application Configuration
app:
  name: "My Web App"
  version: "2.1.0"
  environment: production
  
server:
  host: 0.0.0.0
  port: 8080
  ssl_enabled: true
  
database:
  type: postgresql
  host: db.example.com
  port: 5432
  
allowed_origins:
  - https://app.example.com
  - https://api.example.com

↓ Converts to ↓

JSON Output

{
  "app": {
    "name": "My Web App",
    "version": "2.1.0",
    "environment": "production"
  },
  "server": {
    "host": "0.0.0.0",
    "port": 8080,
    "ssl_enabled": true
  },
  "database": {
    "type": "postgresql",
    "host": "db.example.com",
    "port": 5432
  },
  "allowed_origins": [
    "https://app.example.com",
    "https://api.example.com"
  ]
}

YAML Feature Conversion

How YAML-specific features are handled in JSON conversion

Comments Removed

YAML comments (# lines) are automatically removed since JSON doesn't support comments:

# This comment won't appear in JSON output

Data Type Preservation

YAML data types are preserved in JSON:

number: 42 → "number": 42, boolean: true → "boolean": true

Multi-line Strings

YAML's multi-line strings (| and >) are converted to single JSON strings with proper escaping.

Frequently Asked Questions

Are YAML comments preserved in JSON?

No, YAML comments are removed during conversion since JSON doesn't support comments. Only the data structure is preserved.

How are YAML anchors and aliases handled?

YAML anchors (&) and aliases (*) are resolved and expanded in the JSON output, creating the full data structure.

Can the converter handle invalid YAML?

The converter will show an error message for invalid YAML syntax. Ensure your YAML is properly formatted before conversion.

Are YAML multi-document files supported?

Currently, the converter processes single YAML documents. Multi-document files (--- separator) should be split first.

Conversion Details

Input Format

YAML

Output Format

JSON

CommentsRemoved

Data Types✓ Preserved

Anchors✓ Resolved

FormattingPretty Print

Today's Stats

Conversions

1,834

Config Files

12,467

Avg. Time

0.2s

User Rating

4.8/5

Pro Tips

Valid YAML: Ensure proper indentation and syntax before conversion for best results.

Comments: Document your original YAML files since comments are lost in JSON conversion.

Testing: Validate the JSON output in your target application before production use.

Related Tools

JSON to YAML

Reverse conversion

JSON Formatter

Pretty print JSON

JSON to XML

XML format