CSV to YAML Converter
Convert CSV (Comma-Separated Values) data into YAML format for configuration files, data serialization, and modern DevOps workflows
YAML Options
Recommended Settings
Pro Tips
- •YAML is widely used for configuration files in Docker, Kubernetes, Ansible, and CI/CD pipelines
- •Array of objects format creates key-value pairs, ideal for structured data
- •Numbers are automatically detected and formatted as YAML numeric types
- •Strings that look like YAML keywords (true, false, null) are automatically quoted
Most Popular
Most users choose array of objects with number parsing for clean, structured YAML
When to Use This Tool
Convert CSV data into YAML configuration files for Docker Compose, Kubernetes manifests, Ansible playbooks, and CI/CD pipelines. YAML is the standard format for modern infrastructure-as-code and container orchestration.
Transform CSV configuration data into YAML for web frameworks, build tools, and applications. Many frameworks like Ruby on Rails, Spring Boot, and Node.js applications use YAML for configuration.
Convert CSV datasets into YAML format for data exchange between applications and programming languages. YAML is more human-readable than JSON while being equally parseable by machines.
Create YAML data files for static site generators like Jekyll, Hugo, and Eleventy. YAML front matter and data files are commonly used to define site content, navigation, and metadata.
How It Works
Parse CSV input, handling quoted values and special characters
Sanitize column names to create valid YAML keys (lowercase, underscores)
Detect and convert numeric values to YAML number types if enabled
Identify values that need quoting (YAML keywords, special chars)
Generate YAML in selected format: array of objects or array of arrays
Apply proper indentation (default 2 spaces per YAML specification)
Output clean, properly formatted YAML ready for use
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Files never leave your device. All processing happens locally in your browser.
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Frequently Asked Questions
What's the difference between array of objects and array of arrays?
Array of objects creates [{name: John, age: 25}] with named keys from headers - best for structured data. Array of arrays creates [[John, 25]] with just the values - more compact but loses column names. Use objects for config files, arrays for simple lists.
Why are some values automatically quoted?
YAML has special keywords like 'true', 'false', 'yes', 'no', and 'null' that have boolean/null meanings. If your data contains these words as strings, they must be quoted. The tool also quotes values with YAML special characters like colons and brackets.
Should I enable auto-convert numbers?
Enable it if you want numeric values as YAML numbers instead of strings. For example, age: 25 instead of age: "25". Disable it for IDs, phone numbers, or zip codes that look like numbers but should remain as strings.
What indent size should I use?
YAML spec recommends 2 spaces for indentation. This is the standard used by most YAML files in the wild. Some teams prefer 4 spaces for better readability. Never use tabs - YAML doesn't allow tab characters for indentation.
Can I use this YAML in Kubernetes or Docker Compose?
Yes! The generated YAML is valid and follows YAML 1.2 specification. It works with Kubernetes, Docker Compose, Ansible, GitHub Actions, and all other tools that parse YAML. Just make sure to choose the right format for your use case.
How are column names converted to YAML keys?
Column names are sanitized to lowercase with special characters replaced by underscores. For example, 'User Name' becomes 'user_name'. This ensures keys are valid YAML identifiers and follow common naming conventions.