How to Convert YAML to JSON

Convert YAML to JSON and JSON to YAML instantly in your browser. Free online converter with syntax validation, error highlighting, and proper type preservation.

Open YAML ↔ JSON Converter →

Step-by-Step Guide

1

Paste your YAML

Copy your YAML configuration — from Docker Compose files, Kubernetes manifests, CI/CD pipelines, or any YAML source — and paste it into the input area. The editor provides syntax highlighting to help you read the structure.

2

Convert instantly

The tool parses your YAML and converts it to properly formatted JSON in real-time. The output preserves all data types including strings, numbers, booleans, null values, and nested structures exactly as defined in your YAML.

3

Fix errors if any

If your YAML has indentation issues, invalid syntax, or duplicate keys, the tool highlights the exact problem with a clear error message. Fix the issue in the input and the conversion updates automatically.

4

Copy the JSON output

Copy the clean, formatted JSON to your clipboard with one click. The output uses standard 2-space indentation and is ready to use in API configurations, package files, or anywhere JSON is required.

Try It Now — Free

No signup, no download. Runs entirely in your browser.

Open YAML ↔ JSON Converter

Frequently Asked Questions

Does the converter preserve data types?
Yes. The converter correctly handles all YAML and JSON data types — strings, integers, floats, booleans, null, arrays, and nested objects. YAML-specific features like anchors and aliases are resolved into their expanded JSON equivalents.
Can it handle multi-document YAML files?
Yes. YAML files with multiple documents separated by --- are supported. Each document is converted to a separate JSON object, and the output is presented as a JSON array containing all documents in order.
Can I also convert JSON to YAML?
Yes. The tool works in both directions — paste JSON to get YAML, or paste YAML to get JSON. The bidirectional conversion makes it easy to switch between formats when working with different tools and platforms.
Related Reference

YAML Cheat Sheet

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