Convert TOML to YAML Online
Have a Cargo.toml or pyproject.toml you want to reuse from a YAML-first tool like Ansible, Helm or a CI pipeline? This converter rebuilds your TOML tables and arrays-of-tables into a clean YAML hierarchy. Strings, numbers, dates and booleans keep their types. Comments are dropped. The output is YAML 1.2.
YAML Converter - Convert Between Formats10 formats
Free YAML converter online. Convert YAML to JSON, XML, TOML, INI, Properties, CSV, and more. Also convert INI to YAML, TOML to YAML, and Properties to YAML. With automatic format detection.
Input (TOML)
Output (YAML)
Result will appear here
When you'd convert TOML to YAML
Real-world scenarios where this conversion is the right move.
Pull Rust dependencies into CI
Convert Cargo.toml into YAML so a CI step or external tool can read dependencies without parsing TOML.
Document Python projects
Render pyproject.toml as YAML for docs, dashboards or audits that already speak YAML.
Bridge tools
Some tools accept YAML configs but not TOML. Convert once and pipe in the YAML version.
TOML vs YAML — what changes
Quick reference for the structural differences between both formats.
| Aspect | TOML | YAML |
|---|---|---|
| Header style | [section] and [[arrays.of.tables]]. | Pure indentation with - for sequences. |
| Comments | # comments preserved at the source. | Dropped in conversion — re-add them in the YAML by hand if needed. |
| Inline objects | { key = value, key2 = value2 }. | YAML flow style { key: value } or block style. |
| Strings | Always quoted. | Unquoted when safe. |
Frequently asked questions
Does it handle [[arrays.of.tables]]?
Yes. Every [[table]] block becomes one element in a YAML sequence with the right nesting under its parent key.
What about TOML dates?
RFC 3339 dates and times map to YAML timestamps. Local-time and local-date variants pass through.
Is the YAML output stable across runs?
Yes — same TOML input, same YAML output. Key order is preserved from the source so diffs stay clean.
Why are my comments missing?
TOML and YAML store comments separately from data, and we re-emit only the data. If comments matter, add them after conversion.
Other conversions
Hop into another conversion that shares one of these formats.