YAML to JSON Converter Online

Convert YAML to JSON. Useful for config files and API data transformation. Free.

How to Use

  1. Enter or paste YAML in the left pane
  2. Click the 'Convert' button
  3. The JSON result appears in the right pane
  4. Click 'Copy' to copy the result to clipboard

FAQ

Does it support multiple documents (---)?
Only the first document is converted.
Is my data sent to a server?
No. Processing is done in your browser using js-yaml.
What happens if I enter invalid YAML?
An error message is displayed. Please check your YAML syntax.
Are YAML comments converted to JSON?
No. YAML comments cannot be expressed in JSON and are lost during conversion.
Can I use the converted JSON directly?
Yes. Click the 'Copy' button in the right pane to copy the result for immediate use.

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Update History

Last Updated: 2026-02-21

  • 2026-02-21 Initial release