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Free YAML to JSON Converter

Paste YAML content and convert it instantly into formatted JSON.

About This Tool

Free YAML to JSON converter online — paste YAML (like a Kubernetes manifest, Docker Compose file, or CI/CD config) and instantly get clean, formatted JSON output. Useful for developers who need to feed YAML config into a JSON-only API, debug a YAML file by seeing its JSON structure, or programmatically process configuration written in YAML. Supports nested mappings, lists, strings, numbers, and booleans. Runs entirely client-side — your configuration data never leaves your browser.

How to Use

  1. 1

    Paste your YAML

    Paste YAML content into the input box.

  2. 2

    Convert

    Click Convert to parse the YAML into JSON.

  3. 3

    Copy the JSON

    Copy the formatted JSON output to your clipboard.

Frequently Asked Questions

What YAML features are supported?+
Common YAML constructs are supported: nested key-value mappings, lists (both "- item" block style and inline), strings, numbers, booleans, and null values.
Can I paste a Kubernetes or Docker Compose file?+
Yes — typical Kubernetes manifests and Docker Compose YAML files convert cleanly, making it easy to inspect their structure as JSON.
Is my YAML data sent to a server?+
No — the conversion runs entirely in JavaScript in your browser. Nothing is uploaded.

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