YAML to JSON Converter

What Is It?

The YAML to JSON Converter parses YAML configuration data and converts it to clean, formatted JSON. It’s ideal for developers working with Kubernetes configs, Docker Compose files, Ansible playbooks, or any YAML-based configuration who need the data in JSON format for API calls or code processing.

All conversion happens client-side — no data is sent to any server.

How to Use

1. Paste your YAML text into the left input panel.
2. The JSON output appears automatically on the right.
3. Click Copy JSON to copy the output to your clipboard.

Example

Input YAML:

name: Alice
age: 30
active: true
roles:
  - admin
  - editor
address:
  city: New York
  zip: "10001"

Output JSON:

{
  "name": "Alice",
  "age": 30,
  "active": true,
  "roles": ["admin", "editor"],
  "address": {
    "city": "New York",
    "zip": "10001"
  }
}

Benefits

• Type-aware parsing — correctly converts YAML booleans (true/false/yes/no), nulls, and numbers to their JSON equivalents.
• Nested structure support — handles deeply nested mappings and sequences.
• Formatted JSON output — output is pretty-printed with 2-space indentation.
• Instant conversion — updates as you type.

Common Use Cases

• Converting Kubernetes manifest YAML to JSON for API interactions.
• Extracting configuration values from YAML files as JSON for testing.
• Migrating YAML-based configs to JSON for services that require JSON input.
• Parsing Helm chart values for programmatic processing.
• Debugging GitHub Actions workflow YAML by inspecting the JSON structure.

Frequently Asked Questions

Does it support all YAML features?

The tool supports the most common YAML constructs: mappings, sequences, scalars (strings, numbers, booleans, null), multi-line strings, and inline notation. Advanced YAML features like anchors (&), aliases (*), and custom tags (!!) are not supported.

What happens to YAML comments?

YAML comments (lines starting with #) are ignored during parsing and do not appear in the JSON output, since JSON does not support comments.

Can I convert multi-document YAML?

Multi-document YAML (separated by ---) is not fully supported. Only the first document will be parsed. For best results, split your documents and convert them individually.