How do I convert YAML to JSON?

Paste your YAML into the input panel and the tool will automatically convert it to JSON. You can also click the Convert button or press Ctrl+Enter. The output appears instantly in the right panel as properly formatted JSON with 2-space indentation by default.

Does this YAML to JSON converter handle comments and multiline strings?

Yes. YAML comments (lines starting with #) are stripped during conversion since JSON does not support comments. Multiline strings using block scalar indicators (| for literal and > for folded) are correctly converted to JSON string values with appropriate newline handling.

Is my YAML data sent to a server for conversion?

No. This YAML to JSON converter runs entirely in your browser using JavaScript. Your data never leaves your computer. Nothing is uploaded to any server, making it safe for converting sensitive configuration files, API keys, and private data.

YAML to JSON Converter

Convert YAML to JSON instantly. Paste your YAML configuration, Docker Compose file, Kubernetes manifest, or any YAML data and get clean, formatted JSON. Everything runs in your browser — your data stays private.

Auto-convert

YAML Input

JSON Output

Converted JSON will appear here...

How to Convert YAML to JSON

YAML (YAML Ain't Markup Language) is a human-readable data serialization format widely used for configuration files in tools like Docker Compose, Kubernetes, Ansible, GitHub Actions, and CI/CD pipelines. JSON (JavaScript Object Notation) is the standard format for REST APIs, web applications, and data interchange between systems.

Converting YAML to JSON is a common task when you need to send configuration data to an API, transform Kubernetes manifests for programmatic access, or convert human-readable configs into a format that strict JSON parsers can handle.

What This Tool Handles

Nested objects and deeply nested mappings
Arrays and sequences (both block and flow style)
Multiline strings: literal (|) and folded (>) block scalars
YAML comments (stripped automatically since JSON has no comment syntax)
All scalar types: strings, numbers, booleans, null
Anchors, aliases, and document separators (---)
100% client-side — your data never leaves your browser

Usage Tips

Paste any valid YAML and the output updates automatically
Use Format JSON to re-indent the output with 2-space formatting
Click Copy Output or press Ctrl+Shift+C to copy the JSON
YAML booleans like yes, no, on, off convert to JSON true/false

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Frequently Asked Questions