Convert YAML to JSON and JSON to YAML
This tool converts between YAML and JSON formats. YAML is human-friendly for configuration files, while JSON is machine-friendly for APIs and data exchange. Type or paste your data in either panel and the conversion happens automatically.
About YAML and JSON
YAML (YAML Ain't Markup Language) uses indentation and minimal syntax, making it human-readable. Popular for configuration files (Kubernetes, Docker Compose, CI/CD pipelines).
JSON (JavaScript Object Notation) uses braces and brackets, making it ideal for APIs and data exchange between systems.
Key Differences
| Feature | YAML | JSON |
|---|---|---|
| Syntax | Indentation-based | Braces and brackets |
| Comments | ✓ Supported (#) | ✗ Not supported |
| Readability | More human-friendly | More machine-friendly |
| Use case | Config files | APIs, data storage |
Frequently Asked Questions
How do I convert YAML to JSON?
Paste your YAML into the left panel. The converter parses the YAML structure and converts it to JSON format automatically. The output appears in the right panel. You can copy or download the result.
How do I convert JSON to YAML?
Paste your JSON into the right panel. The converter parses the JSON and converts it to YAML format automatically. The output appears in the left panel with proper indentation.
What YAML features are supported?
This converter supports key-value pairs, nested objects, arrays (with dash syntax), strings, numbers, booleans (true/false), null values, and quoted strings. Comments are preserved during YAML to JSON conversion.
Is my data sent to a server?
No. This converter runs entirely in your browser using JavaScript. Your YAML and JSON data never leave your device. Nothing is stored or logged.
Can I use this for Docker Compose files?
Yes. Docker Compose uses YAML format. You can convert docker-compose.yml files to JSON for programmatic processing or vice versa. The converter handles nested services, volumes, networks, and environment variables correctly.
Why convert between YAML and JSON?
YAML is human-friendly for writing configuration files, while JSON is machine-friendly for APIs and data processing. Converting helps when migrating configs to different systems, processing YAML with JSON-only tools, or making JSON data more readable for humans.
What happens to YAML comments when converting to JSON?
YAML comments (lines starting with #) are stripped during conversion to JSON because JSON does not support comments. The data structure and values are preserved, but annotations are lost.
Can I convert multiple files at once?
This tool converts one file at a time. Paste your YAML or JSON content into the appropriate panel, convert it, copy the result, then repeat for additional files. Each conversion happens instantly in your browser.
Privacy and Limitations
Privacy: All conversion runs locally in your browser. No data is transmitted to any server. Your YAML and JSON remain on your device.
Limitations: This converter supports basic YAML features including objects, arrays, strings, numbers, booleans, null, and comments. Advanced YAML features like anchors, aliases, multi-line strings with special indicators, and custom types are not supported. Very large documents may be slow to convert.
Related Tools
After converting your data, you might find these tools helpful:
- JSON Formatter - Format and beautify JSON with proper indentation
- JSON Validator - Validate JSON syntax and check for errors
- XML Formatter - Format XML documents with proper structure
- CSV to JSON Converter - Convert CSV tabular data to JSON format
- JSON to CSV Converter - Convert JSON data to CSV spreadsheets
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YAML JSON Converter FAQ
How do I convert YAML to JSON?
Paste your YAML into the left panel. The converter parses the YAML structure and converts it to JSON format automatically. The output appears in the right panel. You can copy or download the result.
How do I convert JSON to YAML?
Paste your JSON into the right panel. The converter parses the JSON and converts it to YAML format automatically. The output appears in the left panel with proper indentation.
What YAML features are supported?
This converter supports key-value pairs, nested objects, arrays (with dash syntax), strings, numbers, booleans (true/false), null values, and quoted strings. Comments are preserved during YAML to JSON conversion.
Is my data sent to a server?
No. This converter runs entirely in your browser using JavaScript. Your YAML and JSON data never leave your device. Nothing is stored or logged.
Can I use this for Docker Compose files?
Yes. Docker Compose uses YAML format. You can convert docker-compose.yml files to JSON for programmatic processing or vice versa. The converter handles nested services, volumes, networks, and environment variables correctly.
Why convert between YAML and JSON?
YAML is human-friendly for writing configuration files, while JSON is machine-friendly for APIs and data processing. Converting helps when migrating configs to different systems, processing YAML with JSON-only tools, or making JSON data more readable for humans.
What happens to YAML comments when converting to JSON?
YAML comments (lines starting with
Can I convert multiple files at once?
This tool converts one file at a time. Paste your YAML or JSON content into the appropriate panel, convert it, copy the result, then repeat for additional files. Each conversion happens instantly in your browser.