Developer tools · Data Formats
JSON ↔ YAML Converter
Convert JSON to YAML or YAML to JSON instantly in your browser. Free, no sign-up. Supports nested objects and arrays.
Enter values above to see the result.
How it works
Converts data between JSON (JavaScript Object Notation) and YAML (YAML Ain't Markup Language) formats. Both formats represent the same data structures but have different syntax — JSON uses braces and quotes while YAML uses indentation.
Step by step
- 1Select the conversion direction: JSON → YAML or YAML → JSON.
- 2Paste your input data into the text area.
- 3The tool parses the input and serialises it in the target format.
- 4Copy the output to use in your project.
Examples
JSON to YAML
JSON objects become YAML mappings with key: value syntax, no quotes needed for simple strings.
Inputs
- direction:
- json-to-yaml
- input:
- {"name":"Alice","age":30}
Result
- output:
- name: Alice age: 30
Note: YAML is a superset of JSON — any valid JSON is also valid YAML. This tool supports a common YAML subset: mappings, sequences, strings, numbers, booleans, and null.
Frequently asked questions
What is the difference between JSON and YAML?▾
JSON uses curly braces, square brackets, and quoted strings. YAML uses indentation and colons. YAML is generally more human-readable and supports comments; JSON is more widely supported in APIs and configuration files.