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YAML to JSON Converter

Convert YAML to JSON instantly with our free online tool.

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Conversion payloads stay in this browser tab and are never placed in page URLs - see how local processing works. Privacy-safe analytics record only the tool, outcome, and a coarse input-size bucket.

How to Convert YAML to JSON

Simply paste your YAML content into the input panel on the left and click the Convert button. Your JSON output will appear instantly in the right panel. You can then copy the result to your clipboard or download it as a file.

What is YAML?

YAML (YAML Ain't Markup Language) is a human-readable data serialization format. It's commonly used for configuration files, especially in DevOps tools like Docker Compose, Kubernetes, and Ansible. YAML uses indentation to represent structure, making it very readable but sometimes tricky to edit correctly.

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data interchange format. It's easy for humans to read and write, and easy for machines to parse and generate. JSON is the standard format for APIs and is supported by virtually every programming language.

Common Use Cases

Developers often convert YAML to JSON when working with APIs that only accept JSON, when debugging configuration files, when migrating from YAML-based configs to JSON-based systems, or when sharing data with team members who prefer JSON format.

Convert YAML to JSON in Code

For scripts and CI pipelines, convert on the command line or in code:

yq (CLI)

yq -o=json config.yaml

Python

import yaml, json
with open("config.yaml") as f:
    print(json.dumps(yaml.safe_load(f), indent=2))

Node.js

const yaml = require("yaml");
const json = JSON.stringify(yaml.parse(fs.readFileSync("config.yaml", "utf8")), null, 2);

Frequently Asked Questions

Is my YAML data secure when using this converter?

Yes, absolutely. All conversions happen directly in your browser using JavaScript. No data is ever sent to our servers or any third-party services.

What YAML features are supported?

Our converter supports all standard YAML 1.2 features including nested objects, arrays, multi-line strings, anchors, and aliases.

Can I convert large YAML files?

Yes, but for optimal performance we recommend files under 1MB. Larger files may cause your browser to slow down.

Why convert YAML to JSON?

JSON is more widely supported by APIs and programming languages. Converting YAML configs to JSON makes them compatible with more tools and services.

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