YAML to JSON | Convert YAML to JSON Online

JSON Output

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JSON output will appear here

Paste YAML on the left to generate JSON. Or load sample data to see a demo.

Try YAML to JSON with sample input

How to convert YAML to JSON

Paste YAML on the left and copy or download JSON output on the right.

Paste YAML input

Paste your YAML into the editor. If you want a quick demo, click “Sample”.

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Supports nested YAML - Maps, lists and nesting are handled correctly.

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Instant validation - Invalid YAML shows an error message.

YAML Input Example

apiVersion: apps/v1
kind: Deployment
metadata:
  name: demo-web
spec:
  replicas: 2

Review JSON output

The converted JSON will appear on the right panel as you type.

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Structured output - Great for APIs and processing.

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Pretty JSON - Readable JSON output for humans.

JSON Output Example

{
  "apiVersion": "apps/v1",
  "kind": "Deployment",
  "metadata": {
    "name": "demo-web"
  },
  "spec": {
    "replicas": 2
  }
}

Copy or download JSON

Use “Copy” to copy JSON to your clipboard, or “Download” to save it as a .json file.

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One-click copy - Copy JSON output instantly.

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Download .json - Save JSON output as a file for sharing.

⚡Copy or download JSON

2 Actions

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Download

Download JSON as output.json

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Copy

Copy JSON output to clipboard

💡Tip: JSON works well for downstream scripts and APIs.

YAML to JSON FAQs

Common questions about converting YAML to JSON

What is a YAML to JSON converter?

A YAML to JSON converter is a tool that transforms YAML (YAML Ain't Markup Language) configuration files into JSON format. YAML is widely used for Kubernetes manifests, Docker Compose files, CI/CD pipelines (GitHub Actions, GitLab CI), Ansible playbooks, and infrastructure-as-code, while JSON is the universal format for web APIs, JavaScript applications, and data exchange. Our YAML to JSON converter performs this transformation instantly in your browser, making it perfect for validating YAML configs against JSON schemas, integrating YAML-based infrastructure with JSON APIs, or converting DevOps configurations for programmatic processing in JavaScript, Python, or other languages that prefer JSON.

Does it preserve data types?

Yes! The YAML to JSON converter intelligently preserves data types during conversion. YAML strings become JSON strings, YAML numbers convert to JSON numbers (integers and floats), YAML booleans (true/false, yes/no, on/off) are normalized to JSON true/false, and YAML null values become JSON null. YAML arrays and nested objects are preserved as JSON arrays and objects. However, some YAML-specific features like anchors, aliases, and custom tags are resolved or normalized to standard JSON values since JSON doesn't support these advanced YAML constructs. The conversion ensures your data integrity is maintained while producing clean, standard JSON output.

Is this converter free to use?

Yes! Our YAML to JSON converter is completely free to use with no account required, no rate limits, and no usage restrictions. Simply paste your YAML configuration into the editor and instantly get clean JSON output that you can copy or download. All conversion happens in your browser using client-side JavaScript—your data never leaves your device, ensuring complete privacy and security. Whether you're converting Kubernetes manifests, Docker Compose files, CI/CD configs, or any other YAML data, you can use this tool unlimited times for free. Perfect for developers, DevOps engineers, and anyone working with YAML to JSON conversions.

Why would I convert YAML to JSON?

YAML to JSON conversion is essential when integrating DevOps workflows with web applications, APIs, or languages that prefer JSON. While YAML excels for human-readable configs and supports comments, JSON is the standard for RESTful APIs, JavaScript applications, and data validation. Convert YAML to JSON when you need to: validate Kubernetes manifests against JSON schemas, process CI/CD configs programmatically with JavaScript/Python, integrate infrastructure-as-code with monitoring APIs, store configuration in NoSQL databases, or transmit DevOps data over HTTP APIs. The YAML to JSON converter bridges the gap between infrastructure tooling and modern application development.

Can I use the converted JSON with APIs and JavaScript?

Absolutely! The YAML to JSON converter generates standard JSON that works seamlessly with fetch(), axios, REST APIs, Node.js, React, Vue.js, Angular, and all JavaScript frameworks. The output is valid JSON that can be parsed with JSON.parse(), sent in HTTP request bodies, stored in MongoDB or other NoSQL databases, or consumed by any system expecting JSON format. This makes it perfect for converting Kubernetes configs into API payloads, transforming Docker Compose files for web dashboards, or processing GitHub Actions YAML with JavaScript validation tools. The resulting JSON integrates immediately into modern web and API workflows.

How are YAML features like anchors and multi-line strings handled?

The YAML to JSON converter intelligently resolves YAML-specific features into standard JSON. YAML anchors (&) and aliases (*) are dereferenced—the converter expands them into their actual values in the JSON output, avoiding reference issues. Multi-line YAML strings (using | or >) are converted to standard JSON strings with embedded newlines preserved as \n escape sequences. YAML comments are stripped (since JSON doesn't support comments), and custom YAML tags are normalized to their base values. This ensures the converted JSON is clean, portable, and compatible with all JSON parsers while preserving the semantic meaning of your YAML data.

JSON EDITOR

Edit, format, and beautify JSON

JSON VALIDATOR

Validate, fix, and inspect JSON

JSON ANALYZER

Compare, measure, and map JSON

EXPORT & SHARE

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IMPORT TO JSON

Convert other formats to JSON

CODE & FORMATTERS

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YAML to JSON Converter - Convert YAML to JSON Online

Paste YAML and get formatted JSON output instantly