YAML to TOML Converter

• Converts YAML to TOML and TOML to YAML bidirectionally with real-time output
• Preserves all data types: strings, integers, floats, booleans, arrays, datetime, and nested tables
• YAML uses indentation-based nesting while TOML uses explicit [table] headers and dotted keys
• YAML dominates in Kubernetes, Docker Compose, Ansible, and GitHub Actions; TOML is standard for Cargo.toml and pyproject.toml
• All conversion runs 100% client-side in your browser with no data transmitted to servers

Use Cases

Frequently Asked Questions

How do I convert YAML to TOML format online?

Paste your YAML content into the input panel and the converter instantly generates valid TOML output. YAML nested mappings become TOML [table] sections, sequences become arrays, and all data types (strings, numbers, booleans, datetime) are correctly mapped. Copy the result or download it as a .toml file.

Does this converter support TOML to YAML conversion too?

Yes. This is a bidirectional converter. Switch to TOML-to-YAML mode, paste your TOML content, and get properly indented YAML output. This is useful for converting Cargo.toml or pyproject.toml files into YAML format for tools like Kubernetes, Ansible, or Docker Compose that require YAML input.

How does YAML structure map to TOML format?

YAML nested mappings become TOML [table] sections with dotted key paths (e.g., YAML 'database: host: localhost' becomes TOML '[database]\nhost = "localhost"'). YAML sequences become TOML arrays. YAML sequences of mappings become TOML arrays of tables using [[double.bracket]] syntax. Scalar values (strings, numbers, booleans) are directly converted with proper TOML typing.

Can I convert Kubernetes YAML to TOML with this tool?

Yes. You can paste any valid YAML content including Kubernetes manifests, Docker Compose files, Ansible playbooks, or GitHub Actions workflows and convert them to TOML format. The converter handles all standard YAML features including nested mappings, sequences, multiline strings, and typed values.

Does the converter handle YAML anchors and aliases?

YAML anchors (&anchor) and aliases (*anchor) are resolved during conversion. The referenced values are expanded inline in the TOML output, since TOML does not have an equivalent reference mechanism. This means the TOML output will contain the full values at each location where an alias was used.

Is my YAML or TOML configuration data sent to a server?

No. All conversion processing runs entirely in your browser using client-side JavaScript. Your configuration data, environment variables, API keys, database credentials, and other sensitive content never leave your device. This makes the converter safe for use with private infrastructure configuration.

Is this YAML to TOML converter free to use?

Yes. This converter is 100% free with no signup, no account registration, and no usage limits. Convert as many YAML and TOML files as you need for your development, DevOps, and infrastructure configuration workflows.