YAML to JSON

Convert YAML to JSON with instant syntax validation.

YAML Input73 chars
JSON Output
JSON output appears here

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Frequently Asked Questions

What YAML features are supported?▾

Anything js-yaml's default schema supports: nested maps and sequences, anchors/aliases, multi-line strings, and the standard scalar types (strings, numbers, booleans, null).

Why does my YAML fail to convert?▾

The most common causes are mixed tabs/spaces, a missing colon after a key, or an unquoted value that YAML interprets as a different type than intended.

Can I convert the result back to YAML?▾

Yes — use the JSON to YAML tool for the reverse direction.

Is my data uploaded anywhere?▾

No — the conversion runs entirely in your browser.