YAML to JSON Converter
Convert between YAML and JSON formats instantly. Parse YAML documents into structured JSON objects or generate clean YAML from JSON data. All processing runs locally in your browser for maximum privacy and speed.
YAML to JSON
Paste your YAML below to convert it to formatted JSON.
JSON to YAML
Paste your JSON below to convert it to YAML format.
How YAML to JSON Conversion Works
YAML (YAML Ain't Markup Language) is a human-readable data serialization format that uses indentation to represent hierarchy. JSON (JavaScript Object Notation) uses braces, brackets, and explicit delimiters to structure data. Both formats can represent the same data structures: objects, arrays, strings, numbers, booleans, and null values.
This converter parses YAML's indentation-based structure and maps it to JSON's explicit syntax, and vice versa. YAML keys become JSON keys, YAML lists (using dashes) become JSON arrays, and nested indentation becomes nested JSON objects. The conversion preserves data types including strings, numbers, booleans, and null.
Common Use Cases
- Kubernetes & Docker configs — Convert YAML manifests to JSON for API consumption or programmatic processing.
- CI/CD pipelines — Transform GitHub Actions, GitLab CI, or other YAML-based pipeline configs to JSON for validation.
- API development — Convert between OpenAPI/Swagger specs in YAML and JSON formats.
- Configuration migration — Switch between YAML-based and JSON-based configuration systems in your projects.
Frequently Asked Questions
What is YAML?
YAML (YAML Ain't Markup Language) is a human-readable data serialization format commonly used for configuration files. It uses indentation to represent nested structures, making it more readable than JSON for complex configurations.
What are the differences between YAML and JSON?
YAML uses indentation for structure and supports comments, while JSON uses braces and brackets. YAML is more human-readable, while JSON is more widely supported in programming languages and APIs. Both can represent the same data structures.
Is my data secure when using this converter?
Yes. All conversion happens entirely in your browser using JavaScript. Your YAML and JSON data is never uploaded to any server, ensuring complete privacy and security.
What YAML features does this converter support?
This converter supports key-value pairs, nested objects via indentation, arrays (using dash syntax), quoted and unquoted strings, numbers, booleans (true/false), and null values. It handles most common YAML configurations used in practice.