Convert YAML to JSON

1. Paste your YAML or open a .yaml/.yml file.
2. Your JSON appears instantly. Choose an indentation level (2 or 4 spaces) or minified output.
3. Copy or download the .json file. If there’s an error, the tool shows the exact line and column.

YAML and JSON represent the same data—objects, lists, strings, numbers, and booleans—but YAML uses indentation instead of braces and brackets. That means one misplaced space can break the entire file. Here, errors include a snippet of the problem area and an arrow pointing to the column.

Files with multiple documents separated by --- (common in Kubernetes manifests) are converted into a JSON array. Anchors and aliases (&base, *base) and merge keys (<<) are resolved in the output.

Conversion follows the core YAML 1.2 schema: yes and on remain strings, not true, avoiding the infamous “Norway problem” (NO being treated as false). Everything runs in your browser—nothing you paste or type is sent to a server.