How to Convert JSON to YAML
JSON and YAML describe the same kind of data, but YAML is far easier to read and is the standard for configuration files. This converter turns one into the other faithfully. It parses your JSON and walks the entire structure, rendering objects as YAML mappings and arrays as sequences in clean block style — at any depth of nesting. Numbers, booleans and null stay as real YAML types, and any string that could be misread as something else — a value with a colon, a leading zero like an ID, or a word like true — is quoted automatically so the YAML round-trips back to exactly the same data. Empty objects and arrays are written clearly as and []. The result updates live as you type, with a clear message if the JSON is invalid. Copy or download. Everything runs in your browser, so nothing is uploaded.
Paste your JSON
Paste any valid JSON or load the sample; it's parsed locally with nothing uploaded.
Review the YAML
The converted YAML appears instantly, with full nesting preserved.
Copy or download
Grab the YAML with one tap or save it as a .yaml file.
JSON vs YAML — What's the Difference?
JSON — JavaScript Object Notation
A strict, bracket-and-quote format that's ideal for APIs and machine exchange. It's precise but noisy to read and edit by hand.
YAML — YAML Ain't Markup Language
An indentation-based superset of JSON that's much friendlier to read and edit, and the default for config in tools like Docker, Kubernetes and CI pipelines.
Common Use Cases
Config files
Turn a JSON config into readable YAML for your app or service.
Kubernetes & Docker
Convert JSON definitions into the YAML these tools expect.
CI/CD pipelines
Produce YAML pipeline files from JSON snippets.
Readable data
Make dense JSON far easier to scan and hand-edit as YAML.
Static site data
Feed YAML data files to static-site generators.
Documentation
Show example payloads as clean YAML instead of JSON.
API responses
Convert a JSON response into YAML for docs or configs.
Quick transforms
A fast, no-install way to turn JSON into YAML.
Tips & Best Practices
Start from valid JSON
The input must parse as JSON, so fix trailing commas or unquoted keys first.
Trust the quoting
Values with colons, leading zeros or keyword-like text are quoted so the YAML stays valid.
Nesting is preserved
Deeply nested objects and arrays convert faithfully — no need to flatten.
Check it round-trips
Paste the YAML into a parser to confirm it reads back to the same data.
Mind indentation on edit
If you hand-edit the YAML afterwards, keep the two-space indentation consistent.
Keys stay in order
Object keys are emitted in their original order, so the YAML mirrors your JSON.
Troubleshooting
It says the JSON is invalid
The input must be valid JSON. Check for trailing commas, single quotes or unquoted keys, then try again.
A value has quotes in YAML
That's intentional — values with colons, leading zeros or keyword-like text are quoted so the YAML parses back correctly.
Numbers look like strings
They aren't — real JSON numbers stay unquoted. Only values that were strings and could be misread get quotes.
Output looks flat
YAML uses indentation, not brackets, for nesting. Look at the indent levels — the structure is fully preserved.
Frequently Asked Questions
How do I convert JSON to YAML for free?
Paste your JSON above and clean YAML appears instantly. Copy it or download a .yaml file — free, no signup.
Does it keep nested structure?
Yes. Objects and arrays convert to proper indented YAML blocks at any depth, so nothing is lost.
Are data types preserved?
Yes. Numbers, booleans and null stay as real YAML types rather than becoming strings.
Why did a value get quotes?
Strings that could be misread — with colons, leading zeros or keyword-like text — are quoted so the YAML parses back correctly.
Does it handle arrays of objects?
Yes. A top-level array becomes a YAML sequence, with each object rendered as an indented mapping.
Is the output valid YAML?
Yes. It's standards-compliant YAML that any parser or config loader will accept.
What about empty objects and arrays?
They're written explicitly as {} and [] so the structure stays unambiguous.
Does it preserve key order?
Yes. Object keys are emitted in the same order they appear in your JSON.
Can it convert a single object?
Yes. A single object becomes a YAML mapping; an array becomes a sequence.
How is indentation handled?
Consistent two-space indentation is used throughout, keeping the output tidy and diff-friendly.
Is my data sent to a server?
No. Everything happens inside your browser, so your data never leaves your device.
Can I download the result?
Yes. Save the output as a .yaml file, or copy it straight to your clipboard.
How large a file can it handle?
It comfortably converts large JSON documents, all within your browser.
Can I convert YAML back to JSON?
Yes — use our YAML to JSON converter for the reverse direction.
Does it preserve Unicode?
Yes. Any Unicode characters in your data are preserved in the YAML output.
Does it show errors?
Yes. If the JSON is invalid, you get a clear message pointing you to the problem.
Does it work on phones?
Yes, in any modern browser on Windows, Mac, Android or iPhone with nothing to install.
Is this converter really free?
Completely free, forever — no account, no ads and no premium wall.
100% free · No signup · Processed in your browser · Data never sent
Last updated: August 2026 · FlipMyFormat JSON to YAML Converter
Written and maintained by the FlipMyFormat team · Runs entirely in your browser