YAML to JSON Converter
Convert between YAML and JSON in either direction, with validation. Free to use, no signup required for occasional use.
Converted output will appear here…What is the YAML ↔ JSON Converter?
The YAML ↔ JSON Converter converts configuration and data files between YAML and JSON in either direction. YAML is common for config files (Docker Compose, Kubernetes manifests, CI pipelines) because it's more human-readable, while JSON is the standard for APIs and many tooling contexts — so developers frequently need to translate one into the other, whether to feed a YAML config into a JSON-only tool or to turn an API's JSON response into a more readable YAML config template.
How to use it
Choose the direction — YAML to JSON or JSON to YAML — paste your input, and the converted result appears instantly below. If the input can't be parsed, a validation error explains what's wrong so you can fix it and try again.
Frequently asked questions
Does it support nested objects and lists?
Yes, the converter handles nested maps and lists in both directions.
What happens if my YAML or JSON has a syntax error?
The tool shows a validation error instead of a converted result, so you can spot and fix the problem in your source.
Does it support advanced YAML features like anchors and multi-document files?
The converter covers the common subset of YAML used in most config files — maps, lists, and scalars — rather than advanced features like anchors, aliases, or multi-document streams.