What is the difference between JSON and YAML?

JSON uses braces {} and brackets [] with strict quotation requirements, while YAML uses indentation for structure. YAML is more human-readable and supports comments, making it preferred for configuration files. JSON is better for data interchange between applications due to its strict format.

Is this JSON to YAML converter free?

Yes, our JSON to YAML converter is completely free with no usage limits. There's no signup required, and your data is processed entirely in your browser without being sent to any server.

Can I convert YAML back to JSON?

Yes! Use our YAML to JSON converter at /yaml-to-json for reverse conversion. Both tools work instantly in your browser.

Does the converter preserve data types?

Yes, our converter accurately preserves all JSON data types including strings, numbers, booleans, null values, nested objects, and arrays in the YAML output.

Can I use this for OpenAPI/Swagger files?

Absolutely. Our converter handles OpenAPI 3.0 and Swagger 2.0 specification files, properly converting the entire API definition structure to YAML format.

Is my data secure when using this converter?

Yes. All conversion happens locally in your browser using JavaScript. Your JSON data is never sent to any server or stored anywhere. Your data remains completely private.

What if my JSON has errors?

The converter validates your JSON before conversion. You'll see a clear error message identifying the problem, such as missing commas, unmatched brackets, or invalid characters.

Can I convert large JSON files?

Yes. The converter runs in your browser and can handle files as large as your browser's memory allows. For extremely large files, consider using command-line tools like yq or jq.

Does the output preserve key order?

Yes. The converter maintains the same key order from your original JSON. Keys appear in the YAML output in the same sequence you provided them.

What indentation does the YAML output use?

The default output uses 2-space indentation, which is the most common YAML style. You can change this to 4 spaces if your project requires it.

Charts · values.yaml · Releases

Helm JSON to YAML
Converter

Convert JSON into Helm-ready YAML for chart values and templates in seconds. Ideal for turning generated configuration into the values.yaml Helm expects. Free, instant, and browser-based.

JSON

YAML

How to Convert JSON to Helm YAML

Paste your values JSON

Drop in the JSON for your chart values, overrides, or rendered configuration.

Get Helm YAML

Properly indented values.yaml appears instantly, ready to drop into your chart.

Use with helm install

Copy or download as values.yaml and pass it with helm install -f values.yaml.

Why Helm Uses YAML

Helm charts package Kubernetes applications, and both their templates and values files are written in YAML. The values.yaml file holds the configuration users override at install time.

Configuration is often produced as JSON — by CI systems, config servers, or APIs. Converting that JSON to a values.yaml lets you feed it straight into helm install or helm upgrade with the -f flag.

Benefits for Helm Workflows

values.yaml Ready

Output is valid YAML you can pass to helm install -f, with the same key structure your chart expects.

Cleaner Overrides

YAML makes nested value overrides readable, so teammates can see exactly which defaults you changed.

Comment Your Values

Explain why a replica count or resource limit is set. YAML supports inline # comments; JSON does not.

Private by Design

Values often hold secrets and endpoints. Conversion is fully local to your browser — nothing is uploaded.

Frequently Asked Questions

Can I convert chart values JSON to values.yaml?

Yes. Paste your values JSON and save the output as values.yaml, then pass it to helm install or helm upgrade with the -f flag.

Does it work with --set output?

If you have JSON representing your overrides, convert it to YAML for a cleaner, reusable values file instead of long --set chains on the command line.

Are nested values preserved?

Yes. Deeply nested value structures convert exactly, keeping the key paths your chart templates reference intact.

Does it render Helm template syntax?

No. This converts data structure JSON to YAML; it does not execute Go template directives like {{ .Values.x }}. Template strings convert verbatim if present.

Is my values data private?

Completely. Conversion runs locally in your browser, so secrets and endpoints in your values never leave your machine.

Related Tools & Resources

JSON to YAML Converter
General-purpose JSON to YAML conversion.
YAML to JSON Converter
Reverse the conversion back to JSON.
All Converters
Browse every JSON-to-YAML use case.
Helm Values Files Documentation
Official documentation.

Helm JSON to YAMLConverter