JSON to YAML Converter
Paste JSON to instantly convert it to clean, readable YAML. Handles nested objects, arrays, and all JSON-compatible data types. Useful for generating Kubernetes manifests, CI/CD configuration files, Ansible playbooks, and any YAML-based config from JSON data.
How to Convert JSON to YAML
- 1Paste your JSON into the input area
- 2Click 'Convert to YAML' — JSON parse errors appear if the input is invalid
- 3The YAML output appears on the right
- 4Copy the YAML to use in config files, CI/CD pipelines, or documentation
Key Benefits
- Converts any valid JSON to clean, indented YAML
- Handles nested objects, arrays, null, boolean, and numeric types
- Clear error message for invalid JSON input
- Runs entirely in your browser — your data never leaves your device
Frequently Asked Questions
Why convert JSON to YAML?
Many configuration systems (Kubernetes, GitHub Actions, Ansible, Docker Compose, Helm) prefer YAML. When you have JSON from an API response or tool export, converting to YAML gives you a human-readable version you can add comments to, store in version control, and edit naturally. YAML's indentation-based syntax tends to be easier to read for deeply nested configurations.
Will the converted YAML round-trip back to the same JSON?
Yes, for standard JSON types — objects, arrays, strings, numbers, booleans, and null. All values and types are preserved. Converting back with a YAML to JSON tool will produce equivalent JSON. Floating-point edge cases and very large integers may vary slightly depending on the YAML parser.
Are JSON arrays converted correctly to YAML?
Yes. JSON arrays become YAML sequences, with a dash-space (- ) prefix for each element. Nested arrays and objects inside arrays are indented correctly. An empty JSON array [] becomes an empty YAML sequence [].
Does the output YAML include comments?
No — JSON has no comment syntax, so there is nothing to transfer to YAML. The output is clean, comment-free YAML. You can add comments manually to the YAML after conversion for documentation purposes.
What JSON values map to which YAML types?
JSON strings become YAML scalars (unquoted if safe, quoted if the value could be ambiguous). JSON numbers stay as numbers. JSON true/false become YAML booleans. JSON null becomes YAML null. JSON objects become YAML mappings; JSON arrays become YAML sequences.
Can I use this for large JSON API responses?
Yes. For reading and inspection purposes, this tool works well for any JSON you want to convert to a config or documentation format. YAML tends to be slightly more verbose than JSON for complex nested structures, but the conversion is fast since everything runs in your browser with no network round-trips.