YAML to JSON Converter – Convert YAML to JSON & Back
About the YAML to JSON Converter
The YAML to JSON Converter works in both directions: turn YAML configuration files into JSON, or convert JSON data into clean, properly indented YAML. It handles nested objects, arrays, strings, numbers, booleans, and null values, and strips comments automatically when converting from YAML to JSON.
This makes it practical for developers working with config files across tools that expect different formats, such as Docker Compose, Kubernetes manifests, or CI/CD pipelines defined in YAML but consumed by JSON-based APIs. Once you have JSON output, the JSON Formatter can pretty-print or validate it further, and the CSV to JSON Converter is useful if your data also needs to move between spreadsheet and JSON formats. For API tokens embedded in your config, the JWT Encoder/Decoder is worth having on hand as well.
Our development team tested this converter against deeply nested YAML structures, mixed data types, and malformed input to confirm valid conversions succeed and invalid syntax is flagged clearly with an error message.
How to Use the YAML to JSON Converter
Choose your conversion direction from the dropdown, either YAML to JSON or JSON to YAML. Paste your YAML or JSON content into the input field and click Convert. The result appears below in a read-only output box, ready to copy with the Copy Output button or save directly with Download. Use Clear to reset the input and start over.
Example Usage
Input (YAML to JSON):
name: John
age: 30
hobbies:
– reading
– coding
Output:
A JSON object with “name” set to John, “age” set to 30, and “hobbies” as an array containing reading and coding.
Converting back from JSON to YAML reconstructs the same structure using YAML’s indentation-based syntax instead of curly braces and brackets.
Frequently Asked Questions
Comments are stripped automatically during conversion, since JSON has no comment syntax to preserve them in.
Yes, both directions support deeply nested structures, including arrays of objects and objects containing arrays.
The tool displays a clear error message describing the issue and shows your original input unchanged so you can fix it and try again.
Yes, booleans, numbers, and null values are recognized and converted to their correct equivalent type in both YAML and JSON.
Yes, it’s completely free with no signup required.
