YAML to JSON Converter
YAML to JSON Converter parses YAML — mappings, sequences, nested blocks, inline flow collections and quoted scalars — and turns it into clean, structured JSON. It is the quick way to feed a YAML config into a tool or API that expects JSON.
Paste your YAML and the JSON appears instantly, highlighted and ready to copy. Conversion runs entirely in your browser.
How to use YAML to JSON Converter
- 1
Paste your YAML
Drop YAML configuration or data into the input box.
- 2
Get the JSON
The equivalent JSON appears live with syntax highlighting.
- 3
Copy the result
Use the copy button to grab the JSON output.
YAML and JSON are close cousins
JSON is actually a subset of YAML, so most YAML maps cleanly onto JSON objects, arrays and scalars. Indentation-based blocks become nested structures, and YAML's plain scalars are coerced to numbers, booleans or null where appropriate, just as a JSON document would represent them.
This makes YAML to JSON conversion a natural fit when you author config in friendly YAML but a program needs JSON.
Supported YAML features
The converter handles block mappings and sequences, arbitrary nesting, inline flow collections such as [a, b] and {a: 1}, single- and double-quoted strings, comments, and the usual null/true/false/number literals.
Advanced YAML features — anchors and aliases, multi-document streams, explicit tags and block scalars (| and >) — are outside its scope. For everyday configuration files it covers what you need.
Frequently asked questions
- Does it support nested YAML?
- Yes. Indentation-based nesting, sequences and inline flow collections are all converted.
- Are YAML anchors supported?
- No. Anchors, aliases, multi-document streams and block scalars are not supported; standard mappings, sequences and scalars are.
- Is my YAML sent to a server?
- No. The conversion happens entirely in your browser.
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