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JSON to YAML Converter

Convert JSON to YAML and back again, with validation on both sides.

Converting JSON to YAML

Input lines

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Output lines

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Keys

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Round trip

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The reader supports the subset of YAML that shows up in configuration: nested objects and arrays by indentation, quoted and plain scalars, numbers, booleans, and null. Anchors, multi-line block scalars, and multiple documents are not supported and will report an error rather than being silently mangled. Both directions run in your browser.

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What Is JSON to YAML Converter?

The JSON to YAML Converter converts JSON into YAML and YAML back into JSON, validating as it goes. The YAML reader handles nested objects and arrays by indentation, quoted and plain scalars, numbers, booleans, and null.

Who Uses the JSON to YAML Converter?

Developers use it to move a config between formats, to read a Kubernetes or CI file, or to tidy a JSON payload into something a human can read in a diff.

How to Use the JSON to YAML Converter

  1. Paste JSON or YAML into the input box.
  2. Switch direction if you started with the wrong format.
  3. Copy the output.

Why Choose Our JSON to YAML Converter?

  • Both directions with validation
  • Correct quoting for keys and values that need it
  • Round trip check and key count

Try the JSON to YAML Converter above — it is free, fast, and works on any device. Bookmark this page to return whenever you need it.