YAML to JSON Converter
Transform YAML configuration and structured data into formatted JSON for APIs, applications, and scripts. YAML mappings become objects, sequences become arrays, and the source is parsed before output is created.
Convert YAML to JSON
Paste YAML or upload a .yaml or .yml file to produce indented JSON locally on your device.
Press Ctrl/⌘ + Enter to convert.
CSV is best for arrays of records; XML attributes use @_ keys in other formats.
How YAML maps to JSON
The converter applies clear rules so you can understand the output before using it in another tool or workflow.
Mappings become objects
YAML key-value mappings are converted to JSON objects, including nested mappings used in configuration files.
Sequences become arrays
YAML sequences are represented as JSON arrays, whether they contain scalar values, objects, or more arrays.
Comments are not data
YAML comments are intentionally omitted because JSON has no comment syntax; the parsed values and structure form the result.
How to convert YAML to JSON
No signup or installation is required. Paste content or choose a local file, convert it, and save the result.
- 1
Paste YAML into the source area or upload a .yaml or .yml file.
- 2
Verify YAML is selected as the source and JSON as the destination.
- 3
Select Convert to JSON; YAML parsing errors will be shown if the syntax is invalid.
- 4
Copy the formatted JSON or download it as a .json file.
YAML to JSON FAQ
Answers about file handling, conversion rules, and the generated JSON output.