ByteJSON

YAML to TOML Converter

Convert YAML configuration files to TOML format (v1.0 spec). Transform Kubernetes YAML, Docker Compose, and CI/CD configs into TOML for Rust Cargo.toml and Python pyproject.toml.

What is YAML to TOML Converter?

YAML is a widely-used configuration format for Kubernetes, Docker Compose, CI/CD pipelines, and more. TOML (Tom's Obvious Minimal Language) is a configuration format popular in Rust (Cargo.toml) and Python (pyproject.toml). This tool converts YAML configuration files into TOML format following the v1.0 specification, handling nested tables, arrays, and proper type preservation.

How to Use

  1. Paste your YAML configuration in the input area
  2. Click 'Convert' to transform YAML to TOML
  3. Review the generated TOML output
  4. Copy the result and use it in your Cargo.toml or pyproject.toml

Why Use This Tool?

Convert Kubernetes YAML to TOML for configuration management
Transform Docker Compose YAML to TOML format
Convert CI/CD pipeline configs to TOML
Handles nested tables, arrays of tables, and inline tables
Preserves data types accurately (strings, numbers, booleans)
Browser-based processing — no data sent to servers

Tips & Best Practices

  • YAML mappings become TOML tables [section]
  • YAML sequences of objects become TOML arrays of tables [[items]]
  • YAML sequences of primitives become TOML arrays [a, b, c]
  • Strings that look like numbers or booleans are auto-quoted
  • Top-level keys become [sections] in TOML output

Frequently Asked Questions

How are YAML mappings converted to TOML?

YAML mappings (key: value) become TOML tables. Top-level keys become [sections], and nested objects create nested sections using dotted notation or separate [section.subsection] headers.

How are YAML arrays handled?

YAML sequences of objects become TOML arrays of tables using [[key]] syntax. Sequences of primitive values (strings, numbers) become inline TOML arrays [value1, value2, value3].

What YAML features are supported?

The parser supports key-value pairs, nested objects via indentation, arrays with - dash, strings (quoted/unquoted), numbers, booleans (true/false), and null values. Advanced features like anchors and aliases are not supported.

Why convert YAML to TOML?

TOML is the standard configuration format for Rust (Cargo.toml) and Python (pyproject.toml). Converting YAML configs to TOML allows you to use the same configuration in Rust and Python projects, or migrate from YAML-based tools to TOML-based ones.

Is my data secure?

Yes. All processing happens entirely in your browser. Your YAML content is never sent to any server. No data is collected, stored, or transmitted.

Related Tools

TOML to YAMLTOML to JSONYAML to JSON