JSON & Data

YAML to JSON & JSON to YAML Converter — Bidirectional

Convert between YAML and JSON formats instantly. YAML is popular for configuration files (Kubernetes, Docker Compose, CI/CD). JSON is standard for APIs and JavaScript. This tool converts in both directions with proper indentation and formatting.

YAML Input205 chars

JSON Output316 chars

{
  "name": "my-application",
  "version": "1.0.0",
  "description": "A sample application",
  "settings": {
    "debug": true,
    "port": 3000,
    "hosts": {
      "hosts": [
        "localhost",
        "example.com"
      ]
    }
  },
  "dependencies": {
    "react": "^18.0.0",
    "typescript": "^5.0.0"
  }
}

What is YAML and JSON?

YAML (YAML Ain't Markup Language) is a human-readable data serialization format often used for configuration. JSON (JavaScript Object Notation) is a lightweight data format standard for APIs. Both represent similar data structures but with different syntax. See: YAML 1.2 Specification.

Why Use This Tool

Kubernetes configs — Convert between YAML manifests and JSON for kubectl.
Docker Compose — Transform compose files for programmatic use.
CI/CD pipelines — Convert GitHub Actions, GitLab CI configs.
API development — Transform YAML OpenAPI specs to JSON.
Configuration migration — Move config data between formats.

Tips

YAML uses 2-space indentation by convention.
JSON output is formatted with 2-space indentation.
YAML comments are not preserved in JSON.
Validate YAML indentation if conversion fails.

How to Use the YAML ↔ JSON Converter

Choose direction

Select YAML→JSON or JSON→YAML mode.

Paste input

Enter your YAML or JSON data.

View output

The converted format appears instantly.

Copy result

Copy the converted data for use.

Worked Examples

YAML to JSON

Input

name: my-app
version: 1.0.0
dependencies:
  - react
  - typescript

→

Output

{
  "name": "my-app",
  "version": "1.0.0",
  "dependencies": ["react", "typescript"]
}

JSON to YAML

Input

{"enabled": true, "port": 3000}

→

Output

enabled: true
port: 3000

YAML vs JSON

Feature	YAML	JSON
Syntax	Indentation-based	Braces and brackets
Comments	Supported (#)	Not supported
Readability	More readable	More compact
Quotes	Usually optional	Required for strings
Use case	Config files	APIs, data exchange

Frequently Asked Questions

Does YAML to JSON preserve comments?

No. JSON does not support comments, so YAML comments are lost during conversion.

Are all YAML features supported?

This tool supports common YAML features: objects, arrays, strings, numbers, booleans, null. Advanced features like anchors and aliases may not be fully supported.

Can I convert multi-document YAML?

This tool processes single YAML documents. For multi-document YAML (separated by ---), convert each document separately.

Why is my YAML indentation important?

YAML uses indentation to define structure. Incorrect indentation causes parse errors. Use consistent 2-space indentation.