JSON to YAML Converter – Free Online Tool
Convert JSON to YAML with clean indentation and human-readable syntax. Our free JSON to YAML Converter is perfect for configuration files, CI/CD pipelines, and DevOps workflows.
When You Need YAML
Your config is in JSON but the tool you're using expects YAML. Kubernetes manifests, Docker Compose files, and CI configs all use YAML. Manually converting means watching your indentation carefully and quoting strings correctly.
Proper YAML Formatting
Generates valid YAML with correct indentation and string quoting rules
Array Conversion
Converts JSON arrays to YAML list format with dash prefixes
Nested Support
Handles deeply nested objects with correct indentation
About JSON to YAML Converter
YAML is a popular format for configuration files in DevOps and cloud infrastructure. This converter transforms JSON into clean YAML syntax with proper indentation and quoting. It's useful for Kubernetes configs, Docker Compose files, and CI/CD pipelines.
How the conversion works
Paste your JSON in the left panel and click Convert to YAML. The tool parses your JSON and rebuilds it using YAML syntax. Objects become nested mappings, arrays become lists with dashes, and values are properly quoted when needed.
The output uses 2-space indentation by default. Strings with special characters get quoted. Boolean and null values use YAML format. Download the result as a .yaml file or copy it directly to your config.
When you'd use this
Your cloud provider expects YAML but your config is JSON. Or you're writing a Kubernetes manifest and want to convert from JSON examples. This tool also helps when migrating configs between systems that prefer different formats.
YAML has features JSON doesn't support, like anchors and aliases. This converter creates basic YAML without advanced features. For complex YAML with references, manual editing may be needed after conversion.
Questions
Does YAML support all JSON data types?
Yes, YAML supports all JSON types plus more. Numbers, strings, booleans, null, arrays, and objects all convert cleanly.
How are special characters handled?
Strings with colons, dashes, or leading spaces get quoted. This prevents YAML parsing issues with special syntax.
Can I convert YAML back to JSON?
Yes, use our YAML to JSON tool for the reverse conversion. The round-trip should preserve your data structure.
What about comments in YAML?
JSON doesn't support comments so they won't appear in the output. Add comments manually after conversion if needed.
Is the output valid for Kubernetes?
The YAML syntax is valid but you'll need to ensure the structure matches Kubernetes schema requirements.