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JSON to YAML Converter

Convert between JSON and YAML formats instantly. Auto-detects input format. Everything runs in your browser — your data stays private.

 
Converted output will appear here...

About JSON & YAML Conversion

JSON and YAML are both popular data serialization formats used extensively in software development. JSON is the standard for REST APIs and web applications, while YAML is the preferred format for configuration files in tools like Docker Compose, Kubernetes, Ansible, GitHub Actions, and many CI/CD pipelines.

This converter handles the full range of data types: objects, arrays, nested structures, strings, numbers, booleans, and null values. For YAML input, it also correctly processes multiline strings (literal | and folded > block scalars) and strips comments.

Features

Related Tools

{ }

JSON Formatter

Format and validate JSON data
YML

YAML Validator

Validate YAML syntax
TML

TOML Validator

Validate TOML configuration

Frequently Asked Questions

What is the difference between JSON and YAML?▼
JSON (JavaScript Object Notation) uses braces and brackets with strict syntax, while YAML (YAML Ain't Markup Language) uses indentation-based formatting that is more human-readable. YAML supports comments, multiline strings, and anchors, while JSON is more widely supported in APIs and has stricter parsing rules.
Is my data safe when using this converter?▼
Yes, absolutely. This JSON to YAML converter runs 100% in your browser using JavaScript. Your data never leaves your computer — nothing is sent to any server. You can even use it offline once the page is loaded.
Can this tool handle complex YAML features like multiline strings and comments?▼
Yes. When converting YAML to JSON, the tool correctly handles block scalar indicators (| for literal and > for folded multiline strings), comments (which are stripped since JSON doesn't support them), anchors, nested objects, arrays, and all standard YAML data types including strings, numbers, booleans, and null values.
Keyboard Shortcuts
Ctrl+Enter Convert
Ctrl+Shift+C Copy output
Ctrl+L Clear