YAML to JSON Converter - Free Online Tool

Convert YAML to JSON format instantly with our free online tool.

👉 YAML to JSON Converter

📚 YAML to JSON Guide

Why Convert YAML to JSON?

While YAML is great for configuration files, JSON is often required for:

• REST APIs - Most APIs accept JSON payloads
• JavaScript applications - Native JSON support
• Data storage - MongoDB, Elasticsearch use JSON
• Data exchange - Standard format for web services

Example Conversion

YAML:

server:
  host: localhost
  port: 3000
  ssl: true
  
database:
  driver: postgres
  name: myapp
  credentials:
    user: admin
    password: secret

JSON:

{
  "server": {
    "host": "localhost",
    "port": 3000,
    "ssl": true
  },
  "database": {
    "driver": "postgres",
    "name": "myapp",
    "credentials": {
      "user": "admin",
      "password": "secret"
    }
  }
}

Code Examples

// JavaScript (using js-yaml library)
const yaml = require('js-yaml');
const yamlString = 'name: example\nversion: 1.0';
const jsonObject = yaml.load(yamlString);
console.log(JSON.stringify(jsonObject, null, 2));

# Python
import yaml
import json

yaml_string = """
name: example
version: 1.0
"""
data = yaml.safe_load(yaml_string)
json_string = json.dumps(data, indent=2)

Common Use Cases

• API testing - Convert config files to JSON for requests
• Data migration - Transform YAML configs to JSON
• Application integration - Feed JSON to JavaScript apps
• Validation - Verify YAML structure by viewing as JSON

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👉 Convert YAML to JSON