Does the conversion preserve types?

Yes. Numbers stay numbers, booleans stay booleans, and strings are quoted only when necessary. Null becomes the YAML "null" literal.

Does this tool send my JSON to a server?

No. All conversion runs in your browser using the js-yaml library. Nothing is uploaded.

JSON to YAML

Key Features

Converts JSON to YAML

Configurable indentation (2 / 4 spaces)

Handles nested objects and arrays

Preserves string and number types

Copy and download YAML output

Import JSON from URL or file

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Free Online JSON to YAML Converter

Transform JSON into clean, human-readable YAML with our online JSON to YAML converter. Whether you're migrating an API response into a Kubernetes manifest, exporting application settings as YAML, or simply prefer YAML's indentation-based syntax, this tool produces production-ready output instantly in your browser.

What it converts

Objects: Become YAML mappings with one key per line
Arrays: Become YAML sequences using - bullets
Strings: Quoted only when necessary (e.g. when they look like numbers, booleans, or special YAML tokens)
Numbers, booleans, and null: Preserved as native YAML scalars
Nested structures: Indented correctly with your chosen 2 or 4-space width

Why convert JSON to YAML?

YAML is the de facto configuration format for modern infrastructure: Kubernetes, Docker Compose, GitHub Actions, GitLab CI, Ansible, and many more. APIs frequently return JSON, but the same data is often easier to maintain as YAML thanks to comments and significantly less syntactic noise. This converter bridges the gap in one click.

Quality features built in

Powered by the battle-tested js-yaml library
No reference markers — every object is materialized fully
Sensible line-width wrapping for long strings
Round-trip safe with the YAML to JSON converter

Common use cases

Convert API responses to readable YAML configuration
Migrate package.json snippets to .yaml playbooks
Translate Postman or Insomnia exports into Kubernetes ConfigMaps
Quickly preview deeply nested JSON in a more readable form

Pair with related tools

Combine this converter with the JSON Formatter to clean up your input first, then with the YAML Validator to confirm the result is syntactically valid. The YAML Formatter can re-indent the output to match your team's style.