JSON to YAML Converter
Turn JSON into readable YAML.
How to use JSON to YAML Converter
Convert a JSON object or array into indented YAML, preserving structure and value types.
Open JSON to YAML Converter on toolpermarket and enter your values in the fields below.
In the JSON field, paste the JSON object or array you want to convert. Keep it valid JSON — the tool reports the error if a brace or quote is missing.
Press Convert to compute the result. The output appears immediately below the form. You can change any input and run it again to compare results.
Read the result and use it as needed. If the number looks off, re-check your inputs and run it again — the math is deterministic, so the same entries always return the same answer.
Worked example. Paste {"name":"Jane","age":30,"tags":["a","b"]} and the tool returns the same data indented as YAML.
Tips for accurate results.
Use 2-space indentation; YAML treats indentation as structure, so keep it consistent.
Strings are quoted when needed to stay unambiguous; you can remove quotes if your parser allows plain scalars.
Arrays become dash-prefixed lists, so a JSON array turns into "- item" lines.
When to use JSON to YAML Converter. Authoring config files for tools that prefer YAML over JSON. Converting API responses into a human-readable doc. Checking the shape of nested data before committing a file.
When you actually reach for this
- You are moving JSON config into a YAML file that humans will edit (CI, Kubernetes, compose).
- You want a more readable form of a JSON payload for docs or review.
Where this tool stops being accurate
- YAML's type coercion can change "123" to a number or "no" to false unless quoted; verify after conversion.
- Deeply nested JSON becomes deeply indented YAML that is easy to mis-edit by hand later.
Frequently asked questions
Will the order of my keys be preserved?
Yes. The converter walks your JSON object in its natural key order and writes each key on its own line, so the structure you pasted is the structure you get back.
What happens to null, true and numbers?
They are emitted as YAML scalars — null stays null, booleans stay true/false, and numbers keep their value without quotes.
Can I convert a JSON array at the top level?
Yes. A top-level array becomes a YAML list where every element is prefixed with a dash, whether the elements are scalars or nested objects.
My string "2024-01-01" became a date object — is that a problem?
YAML parses it as a timestamp; quote date-like strings if you need them literal. This tool quotes ambiguous scalars to avoid surprises.
Should I keep JSON or switch to YAML?
Keep JSON if machines consume it (stricter, no whitespace traps); choose YAML when people must edit it comfortably.