YAML to TOML Converter
ConvertersConvert YAML configuration files to TOML instantly in your browser. Ideal for migrating config formats. Swap to TOML→YAML in one click. Powered by js-yaml and smol-toml.
YAMLyaml
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TOMLtoml
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Input: 159 chars
About YAML to TOML Converter
The YAML to TOML converter parses YAML using js-yaml and serialises the result to TOML 1.0 using smol-toml. Both editors are live — edit YAML and TOML updates instantly, or edit TOML and YAML regenerates. This makes it easy to migrate configuration files between YAML-based tools (Docker Compose, Ansible, GitHub Actions) and TOML-based tools (Cargo, Ruff, taplo, Hugo).
Features
- ✓Bidirectional — edit either panel and the other updates in real time
- ✓Pipeline: js-yaml parse → smol-toml serialise
- ✓Full YAML 1.2 support including anchors and multi-document streams
- ✓Output follows TOML 1.0 spec — tables, arrays of tables, inline tables
- ✓Swap direction to TOML→YAML with a single click
- ✓Download converted TOML as a .toml file
- ✓Copy output to clipboard in one click
- ✓Web Worker processing — never blocks the UI
- ✓100% client-side — data never leaves your browser
Common Use Cases
- Migrating docker-compose.yml configuration to a TOML-based container tool
- Converting GitHub Actions YAML workflow config to TOML for Act or similar tooling
- Generating Cargo.toml from an existing YAML project manifest
- Migrating pytest.ini YAML-style configs to pyproject.toml format
Frequently Asked Questions
QAre all YAML types supported?
YAML anchors, aliases, and multi-document streams are resolved by js-yaml before serialisation to TOML. YAML-specific types like timestamps are serialised as TOML datetime values where possible.
QIs my data sent to a server?
No. All conversion runs in a Web Worker inside your browser.