Will number and boolean types be preserved?

Yes — numbers, booleans and null values are written in their native YAML form, not as quoted strings.

What if my JSON is invalid?

You'll see an error message instead of output — fix the JSON syntax and try again.

Can I convert the other direction, YAML to JSON?

This tool is one-directional. Use the YAML Formatter to clean up YAML, or a dedicated YAML-to-JSON tool for that direction.

JSON to YAML

Convert JSON data into YAML. Paste your JSON and get properly indented YAML output, ready for configs and CI pipelines.

How to Convert JSON to YAML

1
Paste your JSON data into the input area.
2
Click Convert to generate the equivalent YAML.
3
Copy the result or download it as a .yaml file.

JSON to YAML Features

Produces properly indented, standards-compliant YAML.
Preserves nested objects, arrays and data types.
Runs entirely client-side — your data never leaves the browser.

Why use Tool King?

Fast

No waiting rooms or sign-ups. Most files are ready in seconds.

Private

Files are processed in memory and discarded right after — never stored or shared.

Free

Every tool is free to use, with no hidden limits on the essentials.

Frequently Asked Questions

Related guides

A quick guide to formatting and validating JSON

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