YAML ↔ JSON Converter

Convert between YAML and JSON formats instantly. Supports nested objects, arrays, multi-line strings, and more.

What is YAML/JSON Conversion?

YAML (YAML Ain't Markup Language) and JSON (JavaScript Object Notation) are two popular data serialization formats. JSON is widely used in APIs and web applications, while YAML is preferred for configuration files (Docker Compose, Kubernetes, CI/CD pipelines) due to its human-friendly syntax. Both formats can represent the same data structures, making conversion between them a common developer task.

This tool converts between YAML and JSON formats instantly in your browser, validating the input and producing clean, properly formatted output.

How to Use This YAML/JSON Converter

Choose the conversion direction — Select YAML to JSON or JSON to YAML.

Paste your input — Enter your YAML or JSON content in the input editor.

View the result — The converted output appears instantly with proper formatting.

Copy the output — Use the copy button to copy the converted content to your clipboard.

Common Use Cases

Kubernetes configuration — Convert between YAML manifests and JSON for different tooling requirements.

CI/CD pipeline editing — Convert GitHub Actions or GitLab CI YAML configs to JSON for programmatic manipulation.

API development — Convert YAML API specifications (OpenAPI/Swagger) to JSON format or vice versa.

Docker Compose — Convert Docker Compose YAML files for use with tools that require JSON input.

Frequently Asked Questions

How do I convert YAML to JSON?

Paste your YAML content into the input editor and the tool will automatically convert it to JSON. The converter handles nested objects, arrays, multi-line strings, and other YAML features.

What is the difference between YAML and JSON?

YAML uses indentation-based syntax and is more human-readable, commonly used for configuration files (Docker Compose, Kubernetes, CI/CD). JSON uses braces and brackets, is more widely supported in APIs, and is the native data format for JavaScript.

Can I convert JSON to YAML?

Yes, this tool supports bidirectional conversion. Paste JSON and it will be converted to clean YAML format, or paste YAML to get JSON. The tool auto-detects the input format.