How to use the JSON to YAML Converter
- Choose or drop your JSON file.
- Select Convert. Conversion happens instantly in your browser.
- Preview the result and download your YAML file.
About this JSON to YAML converter
YAML is easier to read and edit by hand than JSON, which is why most configuration tools use it. This converter produces idiomatic YAML from any JSON.
How JSON to YAML conversion works
- The JSON is parsed and re-serialised as YAML with two-space indentation.
- Strings that YAML could misread (like yes, no, on or 08) are quoted automatically.
Conversion quality: Exact. JSON is a subset of YAML, so every value converts exactly.
When to convert JSON to YAML
- Writing Kubernetes manifests, GitHub Actions or Docker Compose files from JSON examples
Limitations to be aware of
- Key order is preserved, but comments can't exist in JSON so none are generated.
JSON vs YAML
JSON. JSON (JavaScript Object Notation) is the most common format for exchanging structured data between web services. It supports nested objects and arrays, strings, numbers, booleans and null.
YAML. YAML is a human-friendly data format that uses indentation instead of brackets. It is widely used for configuration files (Docker Compose, Kubernetes, CI pipelines).
Frequently asked questions
Is the conversion lossless?
Yes. JSON is valid YAML 1.2, and converting back with YAML to JSON gives the same data.
Are my files uploaded?
No. This tool reads and processes files directly in your web browser. Nothing is sent to Expensico's servers, and the data is discarded when you close or reload the page.