JSON to YAML Converter

Convert JSON to YAML instantly, with key order preserved. Also converts YAML back to JSON from the same page.

Direction:

Input (JSON)

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YAML Output

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Learn more about the JSON to YAML Converter

Convert JSON to YAML Online

JSON and YAML represent the same kind of data — objects, arrays, strings, numbers, booleans, and null — in two different syntaxes. Converting JSON to YAML is lossless: every JSON document is already valid YAML in flow style, so this tool simply re-renders it in YAML's indented block style, with the same structure and the same key order you started with.

Paste a JSON object, array, or full API response — or drag and drop a .json file — and the YAML output updates instantly as you type, entirely in your browser. Nothing is uploaded to a server.

This page defaults to JSON → YAML, but it's the same converter as the YAML to JSON Converter — switch the direction toggle above the editor to convert YAML back to JSON from this same page.

Why Convert JSON to YAML?

Turn an API Response Into Config

A JSON response from an API or export is easy to parse but tedious to hand-edit. Converting it to YAML gives you a version you can comment, tweak, and read at a glance.

Feed JSON Into YAML-Only Tooling

Kubernetes manifests, Ansible playbooks, Docker Compose files, and most CI/CD pipelines are authored in YAML. Converting a JSON payload first lets you drop it straight into that tooling.

Make Deeply Nested Data Readable

JSON’s braces and brackets get hard to scan past a few levels of nesting. YAML’s indentation-based structure is easier to read and review for deeply nested objects.

Preserve Order When You Convert

Key order affects readability and, in some tools, behavior. This converter never sorts keys, so the YAML you get back reflects the same order your JSON was in.

Example

The same data, before and after conversion — nested objects, arrays, and scalar values all convert cleanly.

JSON (input)

{
  "user": {
    "id": 42,
    "name": "Jane Doe",
    "active": true,
    "roles": ["admin", "editor"],
    "address": {
      "city": "London",
      "country": "UK"
    }
  }
}

YAML (output)

apiVersion: apps/v1
kind: Deployment
metadata:
  name: web
  labels:
    app: web
spec:
  replicas: 3
  template:
    spec:
      containers:
        - name: web
          image: nginx:1.25
          ports:
            - containerPort: 80

Features

JSON → YAML and Back

Converts JSON to YAML by default — switch direction above the editor to go YAML → JSON on the same page.

Key Order Preserved

Keys keep their original order in the output, since nothing sorts or reorders them.

Multi-Document Output

Converting YAML back to JSON turns a ---separated multi-document file into a JSON array, one entry per document.

Upload a File

Drag and drop or upload a .json file to convert it directly.

Copy / Download Output

Copy the YAML result or download it as a standalone .yaml file.

Clear Error State

Invalid JSON is reported inline with the parser’s own error message and location.

How to use

Paste your input in the left editor. The output appears automatically on the right. Use the toolbar buttons to copy, download, or transform the result.

Paste or type your content in the input editor on the left.
The formatted output is generated automatically.
Use Copy, Download, or other actions from the output toolbar.
Click the expand icon to view the output in fullscreen.

FAQ

Is this JSON to YAML converter free?

Yes, it is completely free to use with no limits, signup, or account required.

Is my JSON uploaded to a server?

No. All conversion happens entirely in your browser using JavaScript. Your JSON is never uploaded or sent to a server.

Does it preserve key order?

Yes. Nothing sorts or reorders keys, so the YAML output reflects the exact same key order as your JSON input.

Can it convert YAML back to JSON too?

Yes. This page defaults to JSON → YAML, but it’s the same converter as the YAML to JSON Converter — use the direction toggle above the editor to convert the other way from this same page.

What happens if my JSON is invalid?

The parser’s own error message and location are shown inline, so you can see exactly what to fix before converting.