Is the YAML converter free to use?

Yes! Our YAML converter is completely free with no limitations. Convert as many files as you want between all 10 supported formats. No registration or sign-up required.

Does the converter preserve data types?

Yes, our converter preserves data types like strings, numbers, booleans, arrays, and nested objects across all supported formats. Some format-specific limitations apply (e.g., CSV flattens nested structures).

Can I convert large YAML files?

Yes. The converter runs entirely in your browser, so file size is only limited by your browser's memory. Most configuration files convert instantly. For very large files (10MB+), conversion may take a few seconds.

Is my data safe when using the converter?

Absolutely. All conversion happens locally in your browser. Your YAML data is never uploaded to any server. This makes it safe for converting configuration files that contain sensitive information like API keys or database credentials.

YAML Converter - Convert Between YAML, JSON, XML, TOML, INI & More

Free online converter: YAML to JSON, YAML to XML, YAML to TOML, INI to YAML, Properties to YAML, TOML to YAML converter and more format conversions.

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YAML Converter - Convert Between Formats10 formats

Free YAML converter online. Convert YAML to JSON, XML, TOML, INI, Properties, CSV, and more. Also convert INI to YAML, TOML to YAML, and Properties to YAML. With automatic format detection.

Input format

Output format

Actions

Input

YAML

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Output (JSON)

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Key Features

Everything you need to convert between different data formats

Bidirectional Conversion

Convert from any supported format to any other format

Multiple Format Support

Support for the most popular data serialization formats

Syntax Validation

Validate your data structure before conversion

Real-time Conversion

See your converted data instantly as you type

Try a common conversion

Click a conversion and we'll load it into the converter above with the right formats pre-selected.

YAMLJSON

Docker Compose-style YAML converted to JSON — the format every CI/CD tool and API speaks.

JSONYAML

A package.json converted to YAML — easier to read and diff than JSON.

PropertiesYAML

Java-style `.properties` file migrated to hierarchical YAML for Spring Boot or modern configs.

INIYAML

Legacy INI config with sections migrated to structured YAML.

TOMLYAML

Rust `Cargo.toml` converted to YAML — useful to reuse dependencies in other tooling.

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Why Convert YAML to Other Formats?

YAML is the preferred format for configuration in Kubernetes, Docker, and CI/CD, but different tools and APIs require different data formats. Our converter bridges this gap instantly.

API Integration

Most REST APIs expect JSON. Convert your YAML configurations to JSON for API calls, request bodies, and response handling without manual rewriting.

Configuration Migration

Migrating from Java Properties or INI files to YAML? Or from TOML to YAML for Kubernetes? Our converter handles bidirectional conversion between all 10 formats instantly.

Cross-Platform Compatibility

Different platforms require different formats. Convert YAML to XML for legacy systems, to Properties for Java apps, or to ENV for Docker containers - all in one tool.

Popular YAML Conversions

The most frequently used format conversions by our users:

YAML to JSON

The most common conversion. Transform YAML configurations into JSON for APIs, web applications, and tools that require JSON input. Preserves all data types and nested structures.

YAML to Properties

Convert YAML to Java Properties format for Spring Boot, Java applications, and legacy systems. Handles nested YAML keys by flattening them with dot notation.

Properties to YAML

Modernize your Java Properties files by converting them to YAML. Nested keys are automatically grouped, making configurations more readable and maintainable.

INI to YAML

Migrate Windows INI configuration files to YAML format. Section headers become top-level keys, and key-value pairs are properly nested under their sections.

TOML to YAML

Convert TOML configuration files (used in Rust, Python pyproject.toml, and Hugo) to YAML. Preserves table structures, arrays of tables, and inline tables.

YAML to XML

Transform YAML data into XML format for SOAP APIs, Maven pom.xml, Android configurations, and other XML-based systems. Handles attributes and nested elements.

Supported Conversion Formats

Our converter supports 10 data formats with full bidirectional conversion:

YAML - Human-readable data serialization. The standard for Kubernetes, Docker Compose, Ansible, and CI/CD pipelines.

JSON - JavaScript Object Notation. Universal data interchange format for APIs, web apps, and configuration.

XML - Extensible Markup Language. Used in SOAP APIs, Maven, Android, and enterprise systems.

TOML - Tom's Obvious Minimal Language. Used in Rust (Cargo.toml), Python (pyproject.toml), and Hugo.

Properties - Java key-value format. Used in Spring Boot, Java apps, and legacy configurations.

INI - Windows configuration format. Used in PHP (php.ini), MySQL, and desktop applications.

CSV - Comma-separated values. Universal tabular data format for spreadsheets and data analysis.

ENV - Environment variables format. Used in Docker containers, Node.js, and 12-factor apps.

TOON - Token-Optimized Object Notation. Reduces tokens by 30-60% for LLM applications.