How do I convert YAML to JSON?

Paste your YAML into the free converter and get valid JSON instantly.

YAML is a human-readable data format widely used for configuration files, like Kubernetes manifests and CI pipelines.

Does it handle nested structures?

Yes — nested maps and lists convert correctly into JSON objects and arrays.

Are comments preserved?

No. YAML comments are not carried into JSON, which has no comment syntax.

DEVELOPER TOOLS · FREE ONLINE TOOL

YAML to JSON Converter

Convert YAML config and data to clean JSONYAML is the language of configuration: Kubernetes manifests, CI pipelines, Ansible playbooks, Docker Compose files. But plenty of tools only accept JSON. Paste YAML and get equivalent JSON, with every nested map, list, and scalar preserved.

✓ Free to use✓ No sign-up✓ Ready in your browser

// YAML TO JSON CONVERTER · GET STARTED

Use YAML to JSON Converter

Convert YAML config and data to clean JSON

YAML input

Or upload a .yaml / .yml file

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// YAML TO JSON CONVERTER · HOW IT WORKS

How to use the YAML to JSON Converter

Paste your YAML

Paste your YAML into the input box.

Convert to JSON

Click Convert and review the formatted JSON.

Copy or download

Copy the JSON or download it as a .json file.

// YAML TO JSON CONVERTER · ABOUT THIS TOOL

About the YAML to JSON Converter

Data moving into an API, database, or JavaScript app usually needs JSON. This converter bridges YAML and JSON with a full YAML 1.2 parser in your browser, handling anchors, multi-line strings, and multi-document files.

When the YAML is broken, it reports the exact line and column of the problem instead of a vague failure, doubling as a quick validator.

Where it helps most

Translating at system boundaries.

Kubernetes to JSON tools

A Kubernetes manifest needs to feed a tool that only parses JSON. Hand-translating is error-prone busywork; the converter replaces it with one paste.

CI validation

A CI configuration must sometimes be validated by a JSON-schema checker that cannot read YAML. Convert first, validate second, and skip the error-prone hand translation.

API payloads

An Ansible variable file has to become a payload for a REST API. One paste turns the familiar YAML into ready-to-send JSON.

Learning JSON

A developer learning JSON can see what their familiar YAML config looks like in the other syntax. Seeing the translation is the fastest way to learn.

Respect the indentation

YAML's famous rule, handled.

Indentation is structure

Indentation is structure in YAML, and tabs are forbidden. If the conversion produces surprising nesting, the input almost certainly mixed spaces or used a tab.

Anchors resolve

Anchors and aliases, YAML's reuse feature, resolve into their repeated values in the JSON output. Nothing is lost in translation.

Verify structure visually

Seeing the JSON output is the fastest way to verify you understood a YAML file's real structure. Innocent-looking indentation mistakes become glaringly obvious.

YAML to JSON Converter: built for trust

One paste replaces error-prone hand translation. Free, instant, no signup.

// YAML TO JSON CONVERTER · COMMON QUESTIONS

YAML to JSON Converter FAQs

Why does indentation matter so much in YAML?

Because indentation is the structure. Unlike JSON's braces, YAML uses leading spaces to express nesting, so one extra or missing space changes which object a key belongs to. If your converted JSON shows wrong nesting, inconsistent indentation in the source is the cause.

Can I use tabs for indentation in YAML?

How are YAML lists represented in the JSON output?

What happens to YAML anchors and aliases?

Why would I convert YAML to JSON at all?

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