Convert JSON to YAML Online
Convert JSON configuration files, API responses, or data structures to YAML format instantly. Great for Kubernetes configs, CI/CD pipelines, and Docker Compose files.
Quick Start
- 1Paste your JSON into the input editor
- 2The YAML output appears automatically in real time
- 3Review the converted YAML with syntax highlighting
- 4Copy the YAML to your clipboard with one click
What This Tool Does
Set the direction to JSON to YAML, or leave it on auto-detect: input that opens with a brace or a bracket and closes with the matching one is treated as JSON. Output is regenerated a fraction of a second after you stop typing, so you can edit the JSON and watch the YAML change alongside it.
Going this way the converter has to make presentation decisions that JSON never had to make. It picks a scalar style for each value, decides which strings need quoting, and writes every line out in full rather than wrapping long values, which keeps strings intact at the cost of some very wide lines. Indentation is yours to choose at two or four spaces.
Sort keys is the option worth knowing about in this direction. JSON object order is whatever your source produced, so two manifests generated from the same data can differ only by key order. Turning sorting on rewrites every level alphabetically and makes them comparable in a diff.
Limits Worth Knowing
- YAML forbids tab characters for indentation, so choosing Tab quietly gives you two spaces instead.
- Nothing is emitted as an anchor or an alias. A block that repeats three times in your JSON is written out three times.
- A top-level JSON array becomes one YAML sequence. Output is never split into multiple documents separated by three dashes.
- Long strings are not wrapped, so a single value can produce an extremely long line.
- Invalid JSON stops the conversion and reports the line and column of the problem rather than guessing at your intent.
Common Questions
Does the YAML keep my original key order?
Why is my tab indentation coming out as spaces?
Can I load a file instead of pasting?
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Looking for FAQs and advanced options? Visit the full YAML ↔ JSON Converter page →