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JSON to YAML Converter

Convert between JSON and YAML formats instantly. Free online converter with no external dependencies.

Your data never leaves your browser Available via MCP
Next steps
JSON Formatter → JSON Validator → JSON to CSV → TOML Formatter →

How to Use

  1. Select the conversion direction: JSON to YAML or YAML to JSON.
  2. Paste your data into the input panel.
  3. Click Convert to see the result.
  4. Click Copy to copy the converted output.

JSON vs YAML

JSON (JavaScript Object Notation) and YAML (YAML Ain't Markup Language) represent the same data structures — objects, arrays, strings, numbers, and booleans — but with different syntax. JSON uses braces, brackets, and quotes; YAML uses indentation and minimal punctuation. YAML is generally more human-readable, while JSON is more machine-friendly and universally supported.

When to Use Each Format

  • JSON — APIs, data interchange, package.json, tsconfig.json, browser storage
  • YAML — Docker Compose, Kubernetes manifests, CI/CD configs (GitHub Actions, GitLab CI), Ansible playbooks, Helm charts

Common Conversion Scenarios

  • Converting API responses (JSON) into configuration files (YAML)
  • Migrating settings between systems that use different formats
  • Debugging Kubernetes or Docker configurations by viewing as JSON
  • Generating YAML templates from JSON data structures

Related Tools

Format JSON with the JSON Formatter or validate with the JSON Validator. Convert to CSV with the JSON to CSV Converter. Format XML with the XML Formatter. Compare YAML versions with the Diff Checker. Format SQL queries in database config files.

Frequently Asked Questions

What YAML features are supported?
This tool supports objects, arrays, nested structures, strings, numbers, booleans, null values, quoted strings, and block scalars. It handles the most common YAML patterns used in configuration files.
Can I convert YAML with comments?
YAML comments (lines starting with #) are skipped during parsing. Since JSON does not support comments, they cannot be preserved in the conversion.
Does this handle multi-document YAML?
This tool processes single YAML documents. Multi-document YAML files (separated by ---) should be split into individual documents before converting.
Is my data safe?
Yes. All conversion happens entirely in your browser. No data is sent to any server.

Code Examples

Learn how to use this tool programmatically in your favorite language.

Parse YAML

Convert JSON to YAML

Convert YAML to JSON

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