Free TOML to YAML Converter Online
Convert TOML config to YAML instantly in your browser — no server, no signup.
Input TOML
Converted YAML
What Is TOML to YAML?
You've written your service config in TOML — clean, minimal, explicit — and now your deployment pipeline only accepts YAML. That's a common friction point when moving configs to Kubernetes, Ansible, or Helm values. This converter reads your TOML per the TOML 1.0 specification and outputs clean YAML following the YAML 1.2 spec. Tables become mappings, arrays become sequences, and inline tables are expanded. Works just as well for Cargo.toml, pyproject.toml, and any other TOML config you need in YAML form. The conversion happens in the page itself, so the config you paste is never uploaded.
Paste TOML or load a file and the YAML appears on the right, generated locally without a round trip to any backend. For the opposite trip, use YAML to TOML. For TOML to JSON, use TOML to JSON. For formatting TOML first, use TOML Formatter.
TOML to YAML Examples
Convert TOML to YAML. Telecom-themed example:
Example: Subscriber config
YAML output:
Click the Sample button above to load more examples into the editor.
How to Use This Tool
Paste or Upload
Paste TOML into the left panel or upload a .toml file. Use Sample to load example config. Use Clear to reset.
View YAML Output
Converted YAML fills the right panel, with each TOML table rendered as a YAML mapping. If the TOML is malformed you get an error message instead.
Copy or Download
Use Copy or Download to get the YAML. For formatting YAML, use YAML Formatter. For validation, use YAML Validator.
When TOML to YAML Helps
When migrating from TOML config to YAML (e.g. for Kubernetes, CI/CD, or Ansible), convert here. Great for Cargo.toml, pyproject.toml, and similar. For JSON output, use TOML to JSON. For XML, use TOML to XML.
Frequently Asked Questions
Is my data private?
Yes. The TOML is converted by script inside this page and is never uploaded.
Are comments preserved?
YAML supports comments. TOML comments may be preserved or converted depending on the implementation.
TOML to YAML vs YAML to TOML?
TOML to YAML converts config to YAML. YAML to TOML does the reverse. Use the one that matches your source.
What about dates?
TOML dates become YAML timestamps or strings. Check the output for your use case.
Can I convert nested tables?
Yes. TOML nested tables become nested YAML mappings. The structure is preserved.