ToolHarbor

JSON to YAML Converter

Convert between JSON and YAML formats instantly. Transform configuration files, API responses, and data structures.

Features

  • Convert JSON to YAML format instantly
  • Convert YAML back to JSON format
  • Preserve data types and structure
  • Handle nested objects and arrays
  • Support for special values (null, booleans)
  • Works offline - no data sent to servers

How to Use

  1. 1Select the conversion direction (JSON to YAML or YAML to JSON)
  2. 2Paste your JSON or YAML data in the input field
  3. 3Click Convert to transform your data
  4. 4Copy the converted output to your clipboard
  5. 5Use the swap button to convert back and forth

Examples

JSON to YAML

Input

{
  "name": "John Doe",
  "age": 30,
  "active": true,
  "address": {
    "city": "New York",
    "zip": "10001"
  }
}

Output

name: John Doe
age: 30
active: true
address:
  city: New York
  zip: "10001"
YAML to JSON

Input

server:
  host: localhost
  port: 8080
database:
  name: mydb
  enabled: true

Output

{
  "server": {
    "host": "localhost",
    "port": 8080
  },
  "database": {
    "name": "mydb",
    "enabled": true
  }
}
Arrays in YAML

Input

{
  "fruits": ["apple", "banana", "orange"],
  "count": 3
}

Output

fruits:
  - apple
  - banana
  - orange
count: 3

What is a JSON to YAML Converter?

JSON (JavaScript Object Notation) and YAML (YAML Ain't Markup Language) are two popular data serialization formats. JSON is widely used in web APIs, configuration files, and JavaScript applications. YAML is commonly used for configuration files in DevOps tools like Kubernetes, Docker Compose, Ansible, and CI/CD pipelines because of its human-readable syntax.

A JSON to YAML converter transforms structured data between these two formats while preserving the data structure, types, and hierarchy. This is essential when working with different tools that expect different formats, or when you want to make configuration files more readable.

YAML uses indentation to represent structure, making it more readable for humans compared to JSON. It also supports features like comments (which JSON does not) and multi-line strings. However, YAML is sensitive to whitespace, which can lead to subtle errors if not formatted correctly.

The reverse conversion (YAML to JSON) is useful when you need to use configuration data in JavaScript applications, send data to APIs that expect JSON, or validate the structure of your YAML files by converting them to the stricter JSON format.

Our converter handles common data types including strings, numbers, booleans, null values, arrays, and nested objects. All conversion happens in your browser, so your sensitive configuration data never leaves your computer.

Frequently Asked Questions

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