Convert JSON to YAML, Free
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How to convert JSON to YAML
JSON and YAML both represent structured data, but they look very different. JSON uses braces, brackets, and quotes; YAML uses indentation and is considered more readable for configuration files. Converting JSON to YAML is common when writing Kubernetes manifests, Docker Compose files, GitHub Actions workflows, or any config file that accepts YAML.
BoltConverter parses your JSON and outputs equivalent YAML with proper indentation. All data types are preserved: strings, numbers, booleans, arrays, and nested objects all convert correctly. The output YAML is compact and readable.
Upload or paste your JSON
Upload a .json file or paste the JSON text into the input area.
Convert to YAML
The converter parses the JSON and produces an equivalent YAML structure with correct indentation.
Download or copy the YAML
Save the .yaml file or copy the YAML text directly from the output.
Frequently asked questions
Is the conversion lossless?
Yes. All data in the JSON is represented in the YAML output. Numbers, strings, booleans, arrays, and nested objects are all preserved accurately.
What are the main differences between JSON and YAML?
YAML uses indentation instead of braces and does not require quotes around most strings. YAML also supports comments (with #), which JSON does not. They represent the same kinds of data.
Can I use the YAML output in Kubernetes or Docker Compose?
Yes. YAML converted from valid JSON can be used directly in Kubernetes manifests, Docker Compose files, and other YAML-based configuration systems.
What happens to JSON arrays?
Arrays convert to YAML lists using the dash notation. Each item in the JSON array becomes a list item prefixed with a hyphen.
Does YAML support all JSON data types?
Yes. JSON's strings, numbers, booleans, null, arrays, and objects all have direct equivalents in YAML.