Convert YAML to JSON online for free. Paste any YAML and get a clean, formatted JSON output instantly. No installation required.
About this tool
YAML is a human-readable format used in config files for Docker, Kubernetes, GitHub Actions, and more. Converting to JSON is useful when working with APIs, web apps, or tools that only accept JSON input.
Yes, the converter handles any level of nesting, including deeply nested mappings, sequences, and mixed structures.
YAML types like strings, integers, floats, booleans, and null are mapped to their JSON equivalents. Dates are converted to strings, and anchors and aliases are resolved automatically.
Only the first YAML document is processed. If your file contains multiple documents separated by ---, only the first one will appear in the output.
No, all conversion is done locally in your browser using JavaScript. Your data never leaves your device.