🔄 Developer

YAML to JSON Converter — Free 2026

Convert YAML to formatted JSON instantly in your browser. Supports nested objects and arrays.

YAML Input

JSON Output

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How It Works

Paste YAML
Click Convert
Copy the JSON

Converting YAML to JSON

YAML (YAML Ain't Markup Language) is a human-friendly data serialization format widely used for configuration files in tools like Docker Compose, Kubernetes, Ansible, and CI/CD pipelines. While YAML is easy to read and write, many APIs and programming environments work natively with JSON. This tool bridges that gap by converting YAML into properly formatted JSON.

Supported YAML Features

The parser handles key-value pairs, nested objects via consistent indentation, arrays using dash (-) notation, quoted and unquoted strings, numbers, booleans (true/false/yes/no), null values, and comments (lines starting with #). For complex YAML with anchors, aliases, or multi-line block scalars, consider using a full YAML library in your development environment. For validating the JSON output, try our JSON formatter.

Why Convert YAML to JSON?

JSON is universally supported in web APIs, JavaScript, Python, and virtually every language. Converting YAML configs to JSON makes them compatible with tools that only accept JSON input. It also removes YAML's indentation sensitivity, reducing the risk of subtle bugs from incorrect spacing. If you need to convert JSON arrays to spreadsheet format, check our JSON to CSV converter.

Frequently Asked Questions

What YAML features are supported?

This converter supports key-value pairs, nested objects via indentation, arrays using the dash (-) syntax, strings, numbers, booleans (true/false), null values, and comments (lines starting with #). Multi-line strings and advanced YAML features like anchors are not supported.

Is my YAML data sent to a server?

No. The conversion happens entirely in your browser using JavaScript. Your data never leaves your device, making it safe for sensitive configuration files.

Can I convert JSON back to YAML?

This tool converts YAML to JSON only. For the reverse direction, you would need a JSON to YAML converter. You can format existing JSON with our JSON Formatter tool.

Why use JSON instead of YAML?

JSON is natively supported by all programming languages and web APIs, while YAML requires a parser. JSON is also less ambiguous — indentation errors in YAML can silently change the data structure. Many developers write configs in YAML for readability but convert to JSON for programmatic use.