TOML to YAML Converter
ConvertersConvert TOML configuration files to YAML instantly in your browser. Swap to YAML→TOML in one click. Powered by smol-toml and js-yaml. 100% client-side.
TOMLtoml
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YAMLyaml
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Input: 161 chars
About TOML to YAML Converter
The TOML to YAML converter parses TOML using smol-toml and serialises the result to YAML using js-yaml. All TOML 1.0 types are supported, including arrays of tables, datetimes, and inline tables. Both editors stay live — edit TOML and YAML updates instantly, or edit YAML and TOML regenerates. Swap direction with one click.
Features
- ✓Bidirectional — edit either panel and the other updates in real time
- ✓Pipeline: smol-toml parse → js-yaml serialise
- ✓All TOML 1.0 types: strings, integers, floats, datetimes, booleans, arrays, tables
- ✓TOML arrays of tables ([[section]]) → YAML sequences of mappings
- ✓Swap direction to YAML→TOML with a single click
- ✓Download converted YAML as a .yaml 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
- Converting Cargo.toml to YAML for Docker build arguments or CI pipeline variables
- Migrating Hugo config.toml to config.yaml for a Hugo site
- Converting Ruff or Black TOML configuration to YAML for pre-commit hooks
- Extracting pyproject.toml data to YAML for documentation generation
Frequently Asked Questions
QAre TOML datetimes preserved in YAML?
TOML datetimes are resolved to JavaScript Date objects by smol-toml and then serialised as ISO 8601 strings by js-yaml, which is the standard YAML timestamp representation.
QIs my data sent to a server?
No. All conversion runs in a Web Worker inside your browser.