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YAML to JSON Converter — Free Online Tool

Paste your YAML and get valid, pretty-printed JSON output. Instantly. No sign-up required.

Convert back to YAML?

Transform JSON data back to YAML format

How to yaml to json

  1. 1.Paste or type your YAML data into the input text area
  2. 2.Click 'Convert' to generate the JSON output
  3. 3.Review the JSON data in the output area
  4. 4.Click 'Copy' to copy the JSON to your clipboard

About This Tool

Converting YAML to JSON is essential when you need to use YAML-based configuration data with APIs, JavaScript applications, or other systems that expect JSON format. This tool parses your YAML input and produces clean, properly formatted JSON with 2-space indentation.

YAML is popular for configuration files due to its readable, whitespace-based syntax, but many programming tools and APIs require JSON. This YAML to JSON converter handles key-value pairs, nested objects, arrays, multiline strings, and all standard scalar types — preserving your data structure exactly as defined in the YAML source.

All processing happens locally in your browser. Your YAML data is never sent to a server, making this YAML to JSON converter safe for Kubernetes configs, CI/CD pipelines, and any files containing secrets or credentials. There are no file size limits, no account requirements, and no ads.

Frequently Asked Questions

The converter supports the most commonly used YAML features: key-value pairs, nested objects, arrays (using dash notation), quoted and unquoted strings, numbers, booleans, null values, and multiline strings with literal (|) and folded (>) block scalars.

YAML sequences (lines starting with - ) are converted to JSON arrays. Nested arrays and arrays of objects are fully preserved in the JSON output.

The tool will display a clear error message indicating what went wrong during parsing. This helps you identify and fix syntax issues before conversion.

Yes. Use the JSON to YAML converter tool to reverse the conversion. Both tools are available for free on this site.

No. All conversion happens locally in your browser. Your data is never transmitted to any server and is not stored or logged in any way.

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