Converter

YAML to JSON

Parse and convert YAML to JSON locally, with nested data and validation.

Ready when you are

Source data

Result

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Using this tool

Convert nested YAML data to indented JSON, expanding supported aliases.

Actions: Convert

Example

Use two-space indentation; YAML booleans and arrays keep their corresponding JSON types.

Example action and settings

Action: Convert
Indent spaces: 2

Input / action

name: Ada
active: true
items: [1, 2]

Result / expected behavior

{
  "name": "Ada",
  "active": true,
  "items": [
    1,
    2
  ]
}

Available options: Indent spaces

Scope and limitations

Comments and original formatting are not preserved; special collections, cycles and unsafe numbers are rejected.

Common mistakes

Duplicate keys are errors; do not rely on a later key overwriting an earlier one.

Related tools

JSON to YAML YAML to TOML

Privacy and browser support

Input is processed in this browser. Do not use real keys or active sensitive credentials as demonstration data. Device features require browser support and your permission.