TOML to YAML
ConverterConvert TOML data to YAML format with nested tables, arrays and dates for Kubernetes configs, CI pipeline definitions and deployment manifests.
About TOML to YAML
TOML and YAML are both human-oriented config formats, but their ecosystems differ: TOML is popular in Rust/Python toolchains, while YAML rules Kubernetes and CI. When migrating config between these worlds, this tool converts TOML to YAML locally in your browser, preserving nesting and data types. Nothing is uploaded. Tip: Bookmark this tool for quick access whenever you need format conversion. All processing happens locally in your browser — no data upload, so feel free to paste sensitive content.
How to Use
- Open the TOML to YAML tool page
- Enter or paste your data into the input area
- View the real-time results and use the copy button to get the output
Use Cases
- Cross-ecosystem migration — Move config ideas from a Rust TOML setup into YAML-based deployment manifests.
- Unify team format — Batch-convert legacy configs when a team switches from TOML to YAML.
- Learn by comparison — See one config in both TOML and YAML to understand each syntax's trade-offs.
- Generate CI config — Convert parameters organized in TOML into the YAML GitHub Actions expects.
- Improve readability — Convert when deep nesting reads better as YAML indentation than TOML dotted paths.
- Kubernetes config prep — Convert TOML-based app settings into YAML for a ConfigMap or Helm values file.
- Documentation parity — Show the same config in both TOML and YAML forms in docs for readers familiar with either format.
FAQ
Is information lost in conversion?
Almost none. TOML and YAML data models are highly compatible — scalars, arrays, tables all map directly. Only TOML comments are lost.
How do TOML dates appear in YAML?
TOML RFC 3339 dates become YAML timestamp literals, a type YAML supports natively.
How are arrays of tables shown?
TOML [[table]] becomes a YAML list (a sequence of objects prefixed with -).
Why does my TOML fail to parse?
Common causes: unquoted special characters in keys, mismatched string quotes, or duplicate keys in the same table.
Want JSON first?
Use the TOML to JSON tool — JSON makes a more universal intermediate format.
Any browser compatibility requirements?
This tool works in all modern browsers (Chrome, Firefox, Edge, Safari). No plugins or extensions required.
Can I use it offline?
After initial load, most features work offline. The core logic runs entirely in your browser with no network dependency.
Comments
Comments are stored locally in your browser. Configure Giscus for cloud-based comments.