How This TOML to YAML Converter Works
Paste TOML and this toml to yaml converter online produces valid YAML as you type, no upload, no signup, no server round trip. It's a genuine convert toml to yaml workflow: parse toml to yaml runs entirely client-side, table headers, key-value pairs, and arrays all map to their YAML equivalents, and the result updates live in the output panel.
TOML Tables Become Nested YAML Mappings
A toml config to yaml conversion, this toml nested tables to yaml logic in particular, turns each [section] header into a top-level YAML key holding a nested mapping, and a dotted header like [section.subsection] becomes a mapping nested two levels deep, subsection living inside section exactly as the dots imply. Every key-value pair that follows a table header becomes a key under that nested mapping, preserving the same structure TOML expresses through headers instead of indentation.
TOML Arrays and Array-of-Tables in YAML
A toml array to yaml list conversion is straightforward for scalar arrays, a TOML array of strings or numbers becomes an ordinary YAML block list, one item per line with a leading dash. A TOML array-of-tables ([[section]], repeated once per entry) becomes a YAML list of mappings instead, each array item rendered as its own indented block with its own keys, since YAML has no separate array-of-tables concept, a list of objects is how YAML naturally represents the same repeated-table shape.
Common Uses: Cargo.toml, pyproject.toml, and CI Config
This toml to yaml converter free tool is useful whenever a TOML-based config needs to become YAML: converting a cargo toml to yaml when documenting a Rust project's dependencies inside a YAML-based wiki or spec, converting a pyproject toml to yaml when a Python project's build metadata needs to appear in a YAML config elsewhere, or migrating any other TOML-consuming config toward a YAML-based pipeline, GitHub Actions composite steps, application settings, or infrastructure-as-code tooling that expects YAML input.