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›devwrench --run yaml-to-json

Free YAML to JSON Converter
for developers.

Convert YAML to JSON instantly with this free online YAML to JSON converter. Paste YAML config or structured data and get formatted JSON output in real time.

Paste your YAML

Generated JSON

{
  "name": "John Doe",
  "age": 32,
  "city": "Tokyo",
  "active": true,
  "skills": [
    "JavaScript",
    "TypeScript",
    "DevOps"
  ],
  "profile": {
    "email": "john@example.com",
    "company": "DevWrench"
  }
}

Supported

  • YAML objects
  • YAML arrays using dash syntax
  • Nested indentation-based structures
  • Strings, numbers, booleans, and null values
  • Live YAML to JSON conversion

Automatically handled

  • JSON output is formatted and indented automatically
  • Booleans and numbers are converted to native JSON values
  • Nested YAML structures are preserved
  • Empty input is handled safely

Not supported yet

  • Advanced YAML features such as anchors and aliases
  • Multiline block strings using pipe or folded syntax
  • Complex custom tags

Free online YAML to JSON converter

This tool converts YAML into formatted JSON instantly in your browser. It is useful for configuration files, CI/CD workflows, DevOps tools, infrastructure setup, and general developer workflows.

Developers often need to convert YAML to JSON when working with Kubernetes, Docker-related config, deployment files, or structured data that needs to be used in JavaScript, APIs, or tooling.

The conversion runs locally in your browser. Your YAML is not uploaded, stored, or sent anywhere.

Example

name: John Doe
city: Tokyo
skills:
  - JavaScript
  - DevOps

Paste this YAML into the converter above to instantly generate the equivalent JSON output.

Convert YAML to JSON online

Use this converter to transform YAML into readable, structured JSON for JavaScript, APIs, scripts, config tooling, and development workflows.

Common use cases

  • Convert Kubernetes or CI config into JSON for inspection
  • Transform YAML files into JSON for APIs or scripts
  • Validate simple YAML structures during development
  • Prepare structured JSON from config-like documents

How it works

The converter reads indentation-based YAML structure, detects objects and arrays, parses scalar values such as strings, booleans, numbers, and null, then rebuilds the result as formatted JSON.

This version is designed for common YAML use cases and typical config files. It supports the basic structures developers use most often.

The resulting JSON is formatted automatically so you can copy it directly into your project, API request body, script, or test fixture.

FAQ

What is a YAML to JSON converter?

A YAML to JSON converter transforms YAML data into structured JSON so it can be used in JavaScript applications, APIs, scripts, or debugging workflows.

Can I convert nested YAML objects and arrays?

Yes. This tool supports common nested objects and arrays using standard YAML indentation and dash-based list syntax.

Why would I convert YAML to JSON?

JSON is often easier to inspect in developer tools and can be used directly in JavaScript, APIs, fixtures, and many web development workflows.

Is this YAML to JSON tool safe?

Yes. The conversion happens locally in your browser and your data is not uploaded.

More developer tools

DevWrench provides a growing collection of browser-based developer tools including JSON utilities, converters, encoders, and debugging helpers.