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🔄 YAML ↔ JSON Converter

Paste YAML or JSON — we auto-detect and convert to the other format. Handles nested structures, arrays, strings with special characters, and multiline YAML.

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Examples

JSON → YAML

Input{ "name": "Alice", "tags": ["admin", "beta"] }

Output

name: Alice
tags:
  - admin
  - beta

YAML → JSON

Input

name: Bob
age: 30

Output{ "name": "Bob", "age": 30 }

Frequently asked questions

YAML vs JSON — which to use?

YAML for human-edited config (Docker Compose, GitHub Actions, K8s) — supports comments and is more readable. JSON for APIs, data exchange, and JS interop — stricter and faster to parse.

Why does YAML sometimes silently misparse?

YAML is famously ambiguous — "yes", "no", "on", "off" all parse as booleans. Country code "NO" becomes false. Quote string values to be safe.

Does this support anchors and aliases (&, *)?

Basic parsing only. For complex YAML with anchors, use a library like js-yaml in code.

About this tool

YAML ↔ JSON Converter runs entirely in your browser using standard Web APIs. No data is sent to any server. The source for this tool is in our public GitHub repository.

Related tools

📐 JSON Formatter — Format, validate, and minify JSON with syntax error highlighting.
🔄 JSON ↔ CSV Converter — Convert JSON array of objects to CSV, or CSV back to JSON.
🔄 JSON → TypeScript Types — Generate TypeScript interfaces from any JSON object or array.

← All 96 tools

Why this tool

vs typical free web-tool sites

	1vw	Typical free site
Price	Free	Free
Signup required	No	Often (for premium features)
Ads inside the tool	No	Yes (banner + video)
Data sent to server	No (browser-only)	Yes (inputs analyzed for ads)
Total tools	96	Often <20 or scattered across sites
Bookmarkable URL per tool	Yes	Mixed
Loads in under 1s	Yes (static)	Often slow (ad tracking)
Multilingual	EN / ES / PT / FR / DE	Usually EN only
Open source	Yes	No