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JSON to YAML Converter
Paste any JSON object or array and get clean, readable YAML output instantly – properly indented, with correct type handling and one-click copy.
✓ Free✓ No signup✓ Privacy first✓ Runs in your browser
YAML to JSON Converter - ToolPremier

Convert YAML to JSON and JSON to YAML · browser-based · validate and format · copy or download

How it works
Convert in three steps

1. Paste your JSON

Drop in a JSON object, array, or configuration payload. The tool validates the JSON structure before converting.

2. Convert to YAML

Get properly indented YAML with correct type representation - strings, numbers, booleans, and null values all handled accurately.

3. Copy the YAML output

Use it directly as a configuration file, CI/CD pipeline definition, or anywhere YAML is required.

FAQ
Common questions
JSON is compact but hard to read and write by hand – no comments, mandatory quotes on all keys, strict comma placement. YAML is cleaner for human-authored configuration: less punctuation, support for comments, and a layout that reads more like a document than a data structure. Converting JSON to YAML is useful when migrating an application config format, creating CI/CD pipeline files from an existing JSON config, or making an API-generated JSON config human-editable.
JSON arrays convert to YAML sequences – each element preceded by a dash. Arrays of objects become lists of YAML mappings, preserving all key-value pairs. Nested arrays and mixed-type arrays are supported.
No. JSON has no comments, so there is no comment data to carry over. The output is pure structure without annotations. If you want to add comments to the YAML for documentation or clarity, add them manually after conversion.
The output uses 2-space indentation – the most widely used convention for YAML in CI/CD and configuration contexts (GitHub Actions, Docker Compose, Kubernetes all use 2 spaces). This is adjustable if your tooling requires 4-space indentation.
Keep going
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XML Formatter

Format XML configuration files for comparison with YAML equivalents.

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About the JSON to YAML Converter
JSON configs generated by APIs, export tools, or scaffolding scripts often need to be converted to YAML for human editing – as Docker Compose files, GitHub Actions workflows, Ansible variables, or Helm chart values. Hand-converting JSON to YAML is tedious: every key needs its quotes removed, braces and brackets replaced with indentation, and colons adjusted. This converter handles the full structural translation automatically, outputting clean, properly indented YAML that follows standard conventions. It validates the JSON input first and produces output ready to use directly as a configuration file.
Benefits
  • Handles all JSON types - objects, arrays, strings, numbers, booleans, and null values all convert correctly.
  • Produces standards-compliant YAML - 2-space indentation, correct sequence formatting, proper scalar representation.
  • JSON validation before conversion - malformed input is caught before conversion begins.
  • Client-side processing - JSON payloads with sensitive configuration data never leave your browser.
Privacy
All conversion runs in your browser. JSON data is never uploaded or transmitted to any server.