JSON ↔ YAML Converter

JSON to YAML and YAML to JSON Converter

JSON and YAML represent the same data structures but with different syntax. JSON is the standard format for web APIs and JavaScript configs. YAML is preferred in DevOps tools like Kubernetes, Docker Compose, GitHub Actions, and Ansible because its clean indentation-based syntax is easier to read and edit by hand.

This free JSON to YAML converter automatically detects which format you paste and converts in either direction with one click. No manual format selection needed.

How to convert JSON to YAML

1. Paste your JSON or YAML into the input panel.
2. The tool detects the format automatically and shows a format badge.
3. Click Convert to produce the output in the other format.
4. Copy the converted result to clipboard with one click.

JSON vs YAML: key differences

• Syntax: JSON uses braces and quotes. YAML uses indentation and is more readable for humans.
• Comments: YAML supports comments (#). JSON does not.
• Data types: YAML auto-infers types (strings, numbers, booleans) without quotes. JSON requires explicit quoting of strings.
• Multiline strings: YAML has built-in block scalar syntax (| and >). JSON requires escaped sequences.

Common DevOps use cases

• Kubernetes: Convert a JSON API response or Helm values file to a YAML manifest.
• Docker Compose: Migrate service definitions between JSON and YAML formats.
• GitHub Actions: Build workflow YAML from JSON configuration data.
• Ansible: Convert inventory or variable files between JSON and YAML.
• OpenAPI / Swagger: Switch API spec files between JSON and YAML for different tooling requirements.