YAML ⇄ JSON Converter
Basic nested mappings and arrays
Quick guide
What can YAML ⇄ JSON help you do?
Free YAML / JSON converter for basic nested mappings, arrays, quoted strings, booleans, and numbers. Block scalars, anchors, aliases, tags, and flow collections are not supported.
Best for
YAML ⇄ JSON helps with quick debugging, API data cleanup, format checks, and small code or config tasks without opening an IDE or installing a package.
How to use it
For YAML ⇄ JSON, paste the text, code, or configuration into the input area, choose the mode you need, and run it. For large data, test a small sample first.
How to read the result
After using YAML ⇄ JSON, the output is kept copy-friendly for docs, code, and config files. When validation is available, fix the reported error location before trusting the final output.
Privacy and limits
When using YAML ⇄ JSON, most processing happens in the browser. Do not paste passwords, private keys, tokens, or unmasked production data into any online tool.
For YAML ⇄ JSON: Developer tools are for quick inspection and conversion. They do not replace tests, linting, security review, or version control.
Frequently Asked Questions
YAML or JSON?
YAML is more readable (indents, comments) — used for configs. JSON parses faster — used for APIs.