Convert YAML to JSON

Paste your YAML on the left and this tool converts it to JSON instantly, right in your browser. YAML is a human-friendly, indentation-based format popular for configuration like Docker Compose, Kubernetes, and CI pipelines. JSON (JavaScript Object Notation) is the lingua franca of web APIs — compact, strictly typed, and supported everywhere.

The conversion is completely client-side — there's no upload, no queue, and no account. Copy the JSON output or download it as a file, and convert as many documents as you like.

Looking for a different conversion? See all format converters.

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JSONYAMLYAMLXMLYAMLCSV

YAML to JSON Converter — frequently asked questions

How do I convert YAML to JSON?
Paste or type your YAML in the left panel and the JSON appears on the right instantly. Copy it with one click or download it as a file. Everything happens in your browser.
Is my data uploaded to a server?
No. The conversion runs entirely in your browser with JavaScript — your data never leaves your device, so it's safe to convert configuration, API payloads, and other sensitive files. You can even go offline once the page has loaded.
Is this converter really free?
Yes. No sign-up, no payment details, no file-size paywall, and no watermark on the output. A single unobtrusive ad slot covers hosting.

All format converters

JSONYAMLJSONXMLJSONCSVYAMLXMLYAMLCSVXMLJSONXMLYAMLXMLCSVCSVJSONCSVYAMLCSVXML

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