JSON ↔ YAML Converter

Convert between JSON and YAML formats instantly.

Format conversion

Indent:
JSON Input
YAML Output

About This Tool

Convert between JSON (JavaScript Object Notation) and YAML (YAML Ain't Markup Language). YAML is more human-readable and often used for configuration files. All processing happens locally in your browser.

About

About the JSON ↔ YAML Converter

JSON to YAML is a free, browser-based converter that turns JSON into YAML and YAML back into JSON. Paste your data, convert, and copy the result — useful when you have config in one format but a tool, CI pipeline, or API expects the other. Everything runs entirely in your browser, so your data never leaves your machine.

How to use the JSON ↔ YAML Converter

  1. 1Paste or type your JSON (or YAML) into the input area.
  2. 2Pick the direction you want — JSON to YAML, or YAML to JSON.
  3. 3Run the conversion to generate the output instantly.
  4. 4Review the converted result for correct structure and indentation.
  5. 5Copy the output, or fix any syntax error the tool flags in your source.

Common use cases

  • Turning a JSON API response or config into YAML for a Kubernetes, Docker Compose, or GitHub Actions file
  • Converting a YAML config back to JSON so a tool or script that only accepts JSON can read it
  • Making dense JSON easier to read and hand-edit by viewing it as indented YAML
  • Quickly reformatting data while keeping sensitive values off any external server
  • Checking whether a config snippet is valid before pasting it into a pipeline

Frequently asked questions

What is the difference between JSON and YAML?

JSON and YAML both represent the same kinds of structured data — objects/maps, arrays/lists, strings, numbers, booleans, and null. JSON uses braces, brackets, and quotes, while YAML uses indentation and is generally easier for humans to read and edit, which is why it's common for config files like Kubernetes, Docker Compose, and CI pipelines.

Is this JSON to YAML converter free?

Yes, it's completely free to use with no sign-up, account, or usage limits imposed by us.

Is my data private and safe?

Yes. The conversion happens 100% in your browser using client-side code. Your JSON or YAML is never uploaded to a server, stored, or tracked, so it's safe to use with sensitive configuration and credentials.

Does it convert YAML back to JSON too?

Yes, the tool works both ways — convert JSON to YAML, or paste YAML and convert it to JSON.

Why is my input not converting?

Conversion requires valid syntax. Common causes are trailing commas or single quotes in JSON, or inconsistent indentation and tab characters in YAML. Fix the reported syntax issue and convert again.

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