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Convert JSON to YAML and YAML back to JSON, bidirectional, no server round-trip.
Paste or type your input here, JSON ⇄ YAML Converter is loading…
JSON to YAML converts JSON into the cleaner, more human-readable YAML format widely used for configuration, CI pipelines, Kubernetes, Docker Compose, Ansible, and more. You author or store data as JSON and convert it to deployable YAML.
The conversion is reliable because YAML is effectively a superset of JSON, so any valid JSON maps cleanly to YAML. This JSON → YAML direction is lossless; the reverse can't always round-trip because YAML has features, comments, anchors, multi-document files, that JSON simply doesn't have.
Nested objects and arrays are rendered with proper indentation, which in YAML isn't cosmetic but syntactically meaningful: indentation (always spaces, never tabs) denotes structure the way braces do in JSON. The converter produces correctly-indented output you can paste straight into a config file.
Everything runs in your browser, so your config data is never uploaded. Pair it with the JSON Formatter, JSON to TypeScript, and the other ToolsMonk developer tools for the rest of your data and config work.
| Price | Free, no signup, no paywall, no watermark |
|---|---|
| Works on | Any modern browser: desktop, tablet, and mobile |
| Processing | In your browser, files never leave your device |
| Account required | None |
| Category | Developer Tools |
Paste your JSON
Click Process
The tool converts it to indented YAML
Copy the YAML into your config or file
Converts JSON into readable YAML
Handles nested objects and arrays with proper indentation
Instant conversion in a split input/output view
One-click copy of the YAML output
Runs in your browser, your data is never uploaded
Free, with no signup and no rate limit
Turning a JSON config into YAML for tools that prefer it (CI, Kubernetes, etc.)
Making dense JSON more human-readable as YAML
Converting API or config data between the two formats
Preparing YAML config from a JSON source of truth
JSON → YAML is the lossless direction; YAML's comments and anchors have no JSON equivalent going back
YAML uses spaces, never tabs, for indentation, keep that in mind if you edit the output
Great for turning a JSON source of truth into CI, Kubernetes, or Docker Compose config
Common questions about this tool, its workflow, and what to expect before you use it.
YAML Language Development Team
Defines the YAML output, including when strings must be quoted.
IETF
Defines valid JSON, which is what the validator checks your input against.
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Convert JSON to YAML and YAML back to JSON, bidirectional, no server round-trip.
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