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YAML to JSON Converter

Convert YAML data to JSON format with real-time conversion. This tool is useful when you need to convert YAML configuration files to JSON format for APIs, web applications, or other systems that require JSON input.

Sync Scrolling

YAML

JSON

When to use this tool

You need to convert YAML config files into JSON for APIs or tooling that only accepts JSON.

You want to validate or lint YAML by converting it into strict JSON.

Examples

Nested config conversion

Input

service:
  name: api
  ports:
    - 3000
    - 3001

Output

{
  "service": {
    "name": "api",
    "ports": [3000, 3001]
  }
}

Lists become JSON arrays and nested keys become objects.

Developer use cases

Convert Kubernetes or CI YAML into JSON for programmatic processing.

Normalize multi-line YAML into a compact JSON string for debugging.

Common mistakes to avoid

Forgetting that YAML comments do not exist in JSON output.

Using tabs for indentation (YAML requires spaces).

Format and behavior notes

YAML anchors and aliases are resolved before JSON output.

Duplicate keys in YAML are overwritten by the last occurrence.

Related Tools

JSON to YAML Converter

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YAML Formatter

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YAML Validator

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JSON Formatter

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JSON Validator

Validate JSON syntax and structure

Frequently Asked Questions

How do I convert YAML to JSON?

Paste your YAML data into the editor. The JSON output will appear automatically on the right side, formatted with proper indentation.

What if my YAML has errors?

The tool will highlight any syntax errors in red. Fix the errors in your YAML, and the conversion will complete automatically.

Can I convert YAML files with comments?

YAML comments are not preserved when converting to JSON, as JSON does not support comments. The data structure will be converted correctly.