Free JSON to YAML Converter

How to Convert JSON to YAML Online

Paste your JSON into the left panel and the YAML output appears instantly on the right. You can also drag and drop a .json file or use the upload button. Once converted, copy the YAML to your clipboard or download it as a .yaml file.

JSON vs YAML — When to Use Which

JSON is the standard for APIs, data exchange, and programmatic access — it's strict, unambiguous, and every language has a parser. YAML is preferred for configuration files because it's more readable: no braces, no brackets, optional quotes, and support for comments. Tools like Kubernetes, Docker Compose, GitHub Actions, Ansible, and Helm all use YAML natively.

Frequently Asked Questions

What is YAML?

YAML (YAML Ain't Markup Language) is a human-readable data serialization format commonly used for configuration files (Docker Compose, Kubernetes, GitHub Actions, Ansible) and data exchange. It uses indentation instead of braces and brackets.

Why convert JSON to YAML?

YAML is more readable than JSON for configuration files because it eliminates braces, brackets, and most quotes. Many DevOps tools (Kubernetes, Docker Compose, GitHub Actions) use YAML as their native config format.

Is this converter free?

Yes — completely free, forever. No sign-up, no account, no usage limits.

Is my data safe?

All conversion happens locally in your browser using JavaScript. Your JSON is never uploaded to any server. It's safe to use with sensitive or proprietary data.

Does YAML preserve JSON types?

Yes — YAML supports all JSON types: strings, numbers, booleans, null, objects (mappings), and arrays (sequences). The conversion is lossless.

Can I convert YAML back to JSON?

Yes — use the YAML to JSON converter to convert YAML back to JSON.