Is the JSON to YAML converter free?

Yes, completely free with no signup required.

All conversion happens in your browser using js-yaml. Your file never leaves your browser.

Are all JSON types supported?

Yes. Strings, numbers, booleans, null, arrays, and nested objects are all converted to their YAML equivalents.

Yes. JSON null converts to YAML null (represented as ~). JSON booleans become YAML true/false.

The tool produces block-style YAML by default, which is the most readable format. Use the indent selector to choose 2 or 4 spaces.

Convert JSON to YAML in real time. Handles nested objects, arrays, and all JSON types. Browser-based.

🔒 Your file never leaves your browser. Conversion uses js-yaml locally.

YAML indent:

JSON Input

YAML Output

name: John Doe
age: 30
address:
  street: 123 Main St
  city: Springfield
  country: USA
hobbies:
  - reading
  - cycling
  - coding
active: true

1
Paste your JSON
Paste valid JSON into the input box.
2
View the YAML output
The converted YAML appears instantly. The tool validates your JSON and shows an error if it is malformed.
3
Copy the YAML
Click Copy to copy the YAML to your clipboard.