YAML ↔ JSON Converter
YAML Input
JSON Output
How to Convert YAML to JSON
YAML is a superset of JSON, so most valid YAML converts cleanly to JSON. Paste your YAML into the left panel and click Convert (or just start typing — conversion happens automatically). The right panel shows formatted, indented JSON. Arrays, nested objects, and quoted strings are all handled correctly.
How to Convert JSON to YAML
Switch to "JSON → YAML" mode using the toggle above. Paste your JSON in the left panel and the converter outputs clean YAML. JSON always produces valid YAML since JSON is a valid YAML subset. Use "Use as Input" to chain multiple conversions.
YAML vs JSON: Key Differences
| Feature | YAML | JSON |
|---|---|---|
| Readability | High — uses indentation and minimal punctuation | Moderate — requires braces, brackets, and quotes |
| Comments | Supported (# prefix) | Not supported |
| Data types | Rich — includes dates, binary, anchors | Basic — string, number, boolean, null, array, object |
| File size | Generally smaller due to less punctuation | Slightly larger but more explicit |
| Common use cases | Config files (Docker, Kubernetes, CI/CD) | APIs, data interchange, storage |