JSON ⟷ YAML Converter

JSON Input

YAML Output

How to use:
  1. Select your conversion direction (JSON to YAML or YAML to JSON)
  2. Paste your input data in the left panel or upload a file
  3. The converted output will automatically appear in the right panel
  4. Use the copy or download buttons to save your result
JSON to YAML Converter: Convert Between JSON and YAML Formats
Our free online JSON to YAML converter allows you to easily convert data between JSON (JavaScript Object Notation) and YAML (YAML Ain't Markup Language) formats. This tool is designed for developers, DevOps engineers, and anyone working with configuration files or data interchange formats.
Features of Our JSON-YAML Converter
  • Bidirectional Conversion: Convert from JSON to YAML or YAML to JSON with a single click.
  • Syntax Highlighting: Color-coded syntax makes it easier to read and understand both formats.
  • Validation: Automatically validates your input to ensure it's valid JSON or YAML.
  • Copy to Clipboard: Easily copy the converted output with a single click.
  • Dark Mode Support: Work comfortably in any lighting condition with our dark mode option.
  • Privacy-Focused: All conversions happen in your browser - your data never leaves your computer.
Understanding JSON and YAML
JSON (JavaScript Object Notation) is a lightweight data interchange format that's easy for humans to read and write and easy for machines to parse and generate. It's based on a subset of JavaScript syntax and is commonly used for configuration files, API responses, and data storage.
YAML (YAML Ain't Markup Language) is a human-friendly data serialization standard that's designed to be more readable and writable by humans than JSON. YAML uses indentation to denote structure, making it particularly popular for configuration files in tools like Docker, Kubernetes, and many CI/CD platforms.
When to Use JSON vs. YAML
Use JSON when:
  • Working with JavaScript or web APIs
  • You need a format with wide language support
  • Performance is critical (JSON parsing is typically faster)
  • You need a strict, unambiguous format
Use YAML when:
  • Human readability is a priority
  • Working with configuration files
  • You need support for comments
  • Your data has complex hierarchical structures
  • You want to avoid excessive punctuation
How to Use Our JSON-YAML Converter
  1. Select your conversion direction (JSON to YAML or YAML to JSON)
  2. Paste your input data in the left panel
  3. The converted output will automatically appear in the right panel
  4. Use the copy button to copy the result to your clipboard
Common Use Cases
  • Converting API responses (typically in JSON) to YAML for configuration files
  • Transforming YAML configuration files to JSON for systems that require JSON
  • Learning the differences between JSON and YAML syntax
  • Debugging data format issues in applications that use both formats
  • Preparing data for different environments or tools with different format requirements
Frequently Asked Questions
What is the difference between JSON and YAML?
JSON is a lightweight data interchange format that uses a syntax derived from JavaScript. YAML (YAML Ain't Markup Language) is a human-readable data serialization format that's designed to be more readable and writable by humans than JSON. YAML uses indentation for structure, while JSON uses braces and brackets.
Why would I convert between JSON and YAML?
Developers often need to convert between these formats when working with different systems or tools. For example, you might need JSON for an API but prefer YAML for configuration files due to its readability. This tool makes it easy to switch between formats without manual reformatting.
Is the conversion lossless?
In most cases, yes. Both JSON and YAML can represent the same data structures (objects, arrays, strings, numbers, booleans, and null). However, YAML has some features that JSON doesn't support, such as comments and complex types. When converting from YAML to JSON, these YAML-specific features may be lost.