JSON to YAML Converter

Convert JSON to YAML, or YAML back to JSON.

JSON

YAML

JSON to YAML converter

Convert JSON to YAML, or YAML back to JSON. This is handy when you move data between APIs, config files, CI files, and docs.

JSON is common in APIs. YAML is common in config files like Docker Compose, GitHub Actions, Kubernetes, and many DevOps tools.

Why convert between them?

Sometimes an example is in JSON, but the tool you use wants YAML. Sometimes the opposite is true. This converter saves you from rewriting the same data by hand.

Turn API JSON into YAML examples
Convert YAML config into JSON for scripts
Check whether a config file parses correctly
Prepare sample data for documentation

Good to know

JSON object keys become YAML keys
YAML comments are not preserved when converting back to JSON
Indentation matters when editing YAML by hand

How to use JSON to YAML Converter

This converter helps when config data needs to move between JSON and YAML. It keeps the task small: paste one format, convert it, then copy the other format.

Developers often use this page when they need json to yaml, json to yaml converter, json to yaml formatter, and openapi json to yaml.

Privacy and data handling

This tool is designed to run in your browser for normal use, so your input does not need to be sent to a server.

Input and output stay on the page while you work.
Copy buttons use your browser clipboard permission when available.
Avoid pasting private production data on shared or untrusted devices.

Examples

Convert JSON config to YAML

Input

{"name":"api","port":3000,"debug":false}

Output

name: api
port: 3000
debug: false

This is useful when a tool expects YAML but your sample data is JSON.

Steps

1Paste JSON or YAML into the input box.
2Choose the direction you need.
3Review the converted output before using it in a config file.

Common use cases

Convert API examples into YAML documentation.
Move structured config between JSON-based and YAML-based tools.
Check how nested objects look in another format.

Practical tips

YAML is sensitive to indentation, so always review nested values.
Use quotes when a value may be read as a boolean, number, or date.
Validate the final file in the system that will read it.

FAQ

Is YAML the same as JSON?

No. They can represent similar data, but YAML has different syntax and indentation rules. Some values may need quotes to keep their meaning.

Why does YAML break after conversion?

The most common reason is indentation or a value that YAML reads differently than expected, such as yes, no, true, false, or a date-like string.