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JSON to YAML Converter

Transform JSON into clean, readable YAML for Kubernetes, Docker Compose, and configuration files.

Input JSON
YAML Output

When to use YAML over JSON

YAML is the standard configuration format for Kubernetes, Docker Compose, GitHub Actions, and many other DevOps tools. Converting JSON to YAML lets you transform structured data from APIs or scripts into the human-readable format these platforms require — with support for comments, multi-line strings, and cleaner syntax.

  • Kubernetes manifests and Helm charts require YAML format
  • Docker Compose and CI/CD pipelines (GitHub Actions, GitLab CI) use YAML
  • Configuration files benefit from YAML's support for comments
  • Multi-line strings are cleaner in YAML without escape sequences

Frequently asked questions

Is the YAML output valid for Kubernetes?
Yes. The converter produces spec-compliant YAML 1.2 that Kubernetes, Helm, and kubectl accept directly. Key ordering is preserved from the original JSON, and strings that could be misinterpreted (like "yes", "no", or version numbers) are properly quoted.
Can I add comments to the YAML output?
JSON does not support comments, so the converted output will not contain any. However, once you copy the YAML you can freely add comments (lines starting with #) — they are a native YAML feature and will be preserved by any YAML parser.
How are deeply nested objects handled?
Nested JSON objects convert to indented YAML mappings, preserving the full hierarchy. Each nesting level adds two spaces of indentation by default. Arrays of objects are rendered with the YAML dash (-) syntax, keeping the structure readable even for complex, deeply nested data.
How does the converter handle null and boolean values?
JSON null converts to YAML null (or ~), true/false map directly to YAML booleans. The converter preserves the original types faithfully so the YAML output round-trips back to identical JSON when converted in the other direction.

Related tools

  • YAML to JSON — convert YAML back to JSON for APIs and scripts
  • JSON Studio — format, validate, and explore JSON before converting
  • JSON to CSV — export JSON arrays to spreadsheet format
  • JSON Diff — compare two JSON documents for structural differences