YAML (Yet Another Markup Language) is a human-readable data serialisation format. It uses indentation to represent structure rather than brackets or tags. It is commonly used for configuration files in Docker Compose, Kubernetes, GitHub Actions, and many other tools.

Are all JSON structures convertible to YAML?

Yes. Every valid JSON document is also valid YAML (YAML is a superset of JSON). This converter handles objects, arrays, strings, numbers, booleans, and null values.

JSON to YAML / YAML to JSON Converter

JSON input

0 bytes

About JSON ↔ YAML Converter

JSON and YAML represent the same data structures in different syntax. JSON uses curly braces and square brackets; YAML uses indentation. Both formats support the same fundamental types: objects (maps), arrays, strings, numbers, booleans, and null.

Common use cases

Converting API responses (JSON) to Kubernetes or Docker Compose configs (YAML)
Converting YAML config files to JSON for use in code
Debugging YAML indentation issues by converting to JSON and back

Frequently Asked Questions

What is YAML?

YAML is a human-readable data format using indentation for structure. Used in Docker Compose, Kubernetes, GitHub Actions, and other configuration systems.

When should I use JSON vs YAML?

JSON for APIs and data exchange. YAML for config files — it supports comments and is more readable for nested structures.

Are all JSON types supported?

Yes — objects, arrays, strings, numbers, booleans, and null all convert correctly in both directions.

Text & Dev tools

JSON Formatter Hash Generator URL Encoder JS/CSS Minifier SQL Formatter HTML Minifier Base64 HTML→Markdown JSON↔YAML XML Formatter