Does the converter support arrays and deeply nested objects?

Yes. Nested objects and arrays of arbitrary depth are accurately indented with clean YAML list dash (-) prefixes and map key-value formatting.

Are numbers, booleans, and nulls properly preserved in YAML?

Yes. JavaScript booleans (true/false) remain unquoted, null values map to standard YAML null/tilde (~), and numeric values retain their precise floating-point or integer types.

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JSON to YAML Converter

Convert JSON data into clean, indented YAML configuration files for Kubernetes, CI/CD, and Docker Compose.

Instant browser processing Private & Auto-Purged

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Your data is computed entirely inside your browser's JavaScript engine and is never transmitted across the network.

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Indent:

JSON Input Code

json

16 lines • 294 chars

YAML Converted Output

yaml

13 lines•204 chars•204 B

1name: converthub-app
2version: 2.0.0
3private: true
4scripts:
5  dev: next dev
6  build: next build
7  start: next start
8dependencies:
9  js-yaml: ^4.1.0
10  papaparse: ^5.4.1
11  react: ^18.3.1
12  smol-toml: ^1.3.1
13

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How to Convert with JSON to YAML Converter

Follow these 3 simple steps to complete your conversion in seconds.

Step 1 of 3

Paste or Upload Source Data

Paste your JSON to YAML code directly into the left editor pane or click Upload to select a file.

💡 Tip: 100% client-side execution in your browser memory. Zero server uploads.

Step 2 of 3

Configure Syntax & Dialect Options

Adjust indentation (2 or 4 spaces), toggle alphabetical key sorting, set SQL table name and dialect quotes, or pick a built-in template.

Step 3 of 3

Instant Result & Copy / Download

View formatted output in real time with line numbers and syntax highlighting. Click Copy or Download to save.

JSON to YAML Converter Serialization & AST Mapping Specification

Formula representation used for accurate calculations:

Native JavaScript AST = Parser.load(Input Source Stream) Target Output = Serializer.dump(AST, { indent, sortKeys, dialect })

Calculation Example: Strict Type Preservations: YAML & TOML Maps ↔ JSON Objects | Sequences ↔ JSON Arrays | Timestamps ↔ ISO-8601 Strings | Nulls ↔ null

Structured Data Types Mapping Matrix

Quick reference lookup table for standard unit calculations.

Standard type equivalencies across JSON, YAML, and TOML serialization formats.
Data Type / Construct	JSON Representation	YAML / TOML Representation
Key-Value Map	{ "key": "value" }	key: value / key = "value"
Array / List	[1, 2, 3]	- 1\n- 2 / [1, 2, 3]
Boolean	true / false	true / false
Null / Nil	null	null / ~ (omitted in TOML)
Multiline String	"Line 1\nLine 2"	\| (Literal) / """ (Multiline)
Numbers / Floats	42 / 3.14159	42 / 3.14159

Frequently Asked Questions

Common questions and answers about JSON to YAML Converter.

Paste your JSON object or array into the input editor. ConvertHub immediately serializes it into idiomatic, human-readable YAML with proper 2-space indentation and clean string quoting.