YAML to JSON Converter — Free Online

Paste your YAML config on the left, get clean JSON on the right. Perfect for converting configs, CI files, and API payloads.

🔄 YAML → JSON

How the yaml to json works

YAML (human-friendly) and JSON (machine-friendly) represent the same data. This converter parses simple YAML — mappings, nested objects, lists, and scalars — entirely in your browser. Your data never leaves your device.

Note: this handles common YAML used in configs. Advanced YAML features (anchors, multi-line literals, complex types) may need a full parser library.

Why use our yaml to json?

LaCalc’s yaml to json is free, fast, and private. No sign-up, no downloads — type your numbers and get instant results. Every calculation runs in your browser, so your data never leaves your device.

Frequently asked questions

Is my data uploaded anywhere?
No. Conversion runs 100% in your browser with JavaScript. Nothing is sent to any server.
Why convert YAML to JSON?
Many APIs and tools accept only JSON. Converting lets you author in readable YAML and deploy strict JSON.
Does it handle nested YAML?
Yes — nested mappings and lists are supported. Very advanced YAML features may not parse.

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