YAML (YAML Ain't Markup Language) is a human-friendly data format used for configuration files. It uses indentation instead of braces and is common in Docker, Kubernetes, GitHub Actions, and other DevOps tools.

Will my JSON arrays become YAML lists?

Yes. JSON arrays become YAML lists (items prefixed with -), and JSON objects become YAML mappings.

Is my data sent to a server?

No. Conversion runs entirely in your browser.

JSON to YAML

Convert JSON to YAML online. Paste JSON and get clean YAML output instantly.

JSON

YAML

Frequently asked questions

JSON to YAML Converter — Free Online

Paste JSON and get clean, properly indented YAML output. Useful for converting API responses into config files, or switching between formats for different tools.

Instant conversion

Paste JSON and get YAML immediately.

Clean output

Properly indented, human-readable YAML.

Private

Runs in your browser — nothing uploaded.

JSON to YAML

Frequently asked questions

What is YAML?

Will my JSON arrays become YAML lists?

Is my data sent to a server?

JSON to YAML Converter — Free Online