YAML ↔ JSON Converter
spaces (1–8)
YAML Input
JSON Output
YAML to JSON Converter: Free Online Tool (2025)
Convert YAML to JSON or JSON to YAML instantly. Supports nested structures, arrays, and custom indentation. Ideal for Docker, Kubernetes, and API configs.
YAML vs JSON Comparison
| Format | Use Case | Readability | Size |
|---|---|---|---|
| YAML | Config files, human editing | High (no quotes/brackets) | Larger |
| JSON | APIs, web services | Medium (strict syntax) | Smaller |
Example: YAML to JSON
app:
name: MyApp
version: 1.0.0
features:
- login
- dashboard
- reports
→
{
"app": {
"name": "MyApp",
"version": "1.0.0",
"features": [
"login",
"dashboard",
"reports"
]
}
}
Example: JSON to YAML
{
"database": {
"host": "db.example.com",
"port": 5432,
"ssl": true
}
}
→
database: host: db.example.com port: 5432 ssl: true
Supported YAML Features
- Objects & Arrays - Nested structures
- Scalars - Strings, numbers, booleans, null
- Comments - Preserved in YAML output
- Multi-line strings - | and > blocks
FAQ
Are comments preserved?
Yes in YAML → JSON → YAML round-trip. Lost when converting to JSON.
Can I convert large files?
Up to 500KB recommended. Use CLI tools for bigger files.
Why use YAML over JSON?
Better readability for humans. No need for quotes on keys.
Tips for Best Results
- Validate YAML syntax before converting
- Use consistent indentation
- Avoid tabs in YAML
- Copy result before navigating away
Conclusion
Fast, accurate YAML JSON converter for developers and DevOps. No installation needed!
Related: CSV ↔ JSON | JSON ↔ XML