YAML to JSON
Convert YAML into readable JSON for APIs, config migrations, and test fixtures.
What is YAML to JSON?
Convert YAML configuration into JSON and inspect the resulting types. YAML mappings, sequences and scalars do not always have an identical representation in JSON.
How to use YAML to JSON?
Step 1
Paste YAML into the input panel.
Step 2
Run the conversion to create formatted JSON output.
Step 3
Copy the JSON or continue with JSON tools for additional formatting.
Example input / output
name: api and replicas: 2 become an object with a string name and numeric replicas. Quote identifiers such as "00123" when leading zeros are meaningful rather than numeric formatting.
Example input
service: auth
regions:
- eu-west-1
- us-east-1
retries: 3Check the result
- Indentation matters in YAML and is a common source of parse errors.
- Anchors and advanced YAML features may not map perfectly into JSON.
Practical developer examples
Check scalar types
Compare booleans, numbers, null and quoted strings before using the converted configuration. A conversion that parses successfully can still change a downstream application's assumptions.
Review aliases and document count
Aliases refer to other values in YAML. Multi-document input and custom tags need separate handling; use a single ordinary configuration document for this converter.
Common developer use cases
JSON has no comments or YAML presentation styles. Keep the original YAML if comments, custom tags or formatting carry useful context.
Common issues
FAQ
Are YAML comments included in JSON?
No. Comments are not data values in JSON.
Can conversion validate my deployment configuration?
No. It checks representation, not the application's schema or deployment behavior.