Free JSON to YAML Converter - Convert JSON to YAML Online
Convert JSON to clean, readable YAML instantly. Perfect for Kubernetes configs, Docker Compose files, and CI/CD pipelines.
Convert JSON to YAML instantly. Produce clean, readable YAML for configs, CI/CD, and Kubernetes.
Need to go the other way? Convert YAML to JSON
Paste or upload a YAML file and get clean JSON output in seconds.
What is JSON to YAML Converter?
Our JSON to YAML Converter transforms JSON data into human-readable YAML format instantly. Whether you're creating Kubernetes manifests, Docker Compose files, or CI/CD pipeline configs, converting from JSON to YAML makes your configuration files easier to read and maintain.
YAML's indented block style is far more readable than JSON for configuration files. No brackets, no quotes around keys, and comments are supported. Convert API responses or data files to YAML for use in tools like Ansible, Helm, GitHub Actions, and more.
The tool supports configurable indent size (2 or 4 spaces) and line wrap width, so your output matches your team's style guide. Auto-convert mode provides real-time output as you type — ideal for quickly previewing YAML structure.
All conversions run locally in your browser — no server uploads, no data storage. Your configs, credentials, and sensitive data stay completely private. Works offline once loaded.
Powerful Features
Everything you need in one amazing tool
JSON to YAML
Convert any valid JSON to clean YAML. Objects, arrays, nested structures — all handled.
File Upload
Upload a .json file directly. No copy-paste needed for large configs.
Customizable Output
Choose indent size and line wrap width. Match your project's YAML style guide.
Auto-Convert
Enable auto-convert for real-time YAML as you type. Instant feedback.
Copy & Download
Copy YAML to clipboard or download as .yaml file. Ready to use immediately.
100% Private
All processing in browser. No uploads, completely secure for sensitive configs.
How It Works
Get started in 4 easy steps
Paste or Upload JSON
Paste JSON directly or upload a .json file. Use the Sample button to try it out.
Choose Options
Set YAML indent and line width to match your project's conventions.
Click Convert
Hit Convert or enable Auto-convert for real-time output.
Copy or Download
Copy YAML to clipboard or download as .yaml file for immediate use.
Why Choose Our JSON to YAML Converter?
Stand out from the competition
Instant Results
Convert in milliseconds. No delays, no server round-trips.
Complex Structures
Handles deeply nested JSON. Arrays of objects, mixed types — all converted cleanly.
JSON Validation
Validates JSON before converting. Shows exact error message if input is invalid.
No Limits
Convert files of any size. No restrictions on file complexity.
100% Secure
All processing local. No uploads, no storage, completely private.
Download Files
Save output as .yaml file ready for Kubernetes, Helm, or Ansible.
Perfect For
See how others are using this tool
CI/CD Pipelines
Convert JSON config exports to YAML for GitHub Actions or GitLab CI workflows.
Kubernetes & Helm
Convert JSON manifests to YAML for kubectl apply. Write Helm values files easily.
App Configuration
Convert JSON app configs to YAML for tools like Ansible, Salt, or Puppet.
OpenAPI / Swagger
Convert OpenAPI JSON spec to YAML. Preferred format for documentation tools.
Cloud Infrastructure
Produce YAML for AWS CloudFormation or Azure Bicep from JSON templates.
Seed Data
Convert JSON seed data to YAML for use with Django fixtures or test scaffolding.
Frequently Asked Questions
Everything you need to know about JSON to YAML Converter
Any valid JSON — objects, arrays, nested structures, numbers, booleans, and null values. The tool validates JSON before converting and shows a clear error message if there are issues like missing commas or unmatched brackets.
Line width controls how long a YAML line can be before strings are wrapped. 80 chars matches the classic terminal width, 120 is a common modern default, and "No wrap" disables wrapping entirely — useful when other tools will process the YAML.
Standard JSON does not support comments, so there are none to preserve. If you need comments in the YAML output, you can add them manually after conversion — YAML fully supports # line comments.
js-yaml uses block style by default for objects and arrays, which is the most readable YAML format. Short values may appear on a single line (flow style) while longer structures use block style. The data is identical — only the formatting differs.
Yes — use our YAML to JSON Converter tool, linked below. Both tools are separate so each does one job cleanly.
Never. All conversion happens entirely in your browser using JavaScript. No data is sent to any server. Your JSON configs, credentials, and sensitive data are completely private.
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