YAML to TOML & TOML to YAML Converter
Convert configuration files seamlessly between YAML and TOML formats with full data type preservation.
Batch workspace
Format multiple files locally in one run.
How to use the YAML to TOML Converter
Paste code or file
Paste your raw YAML text or upload directly.
Configure options
Choose indentation, dialect, or formatting preferences.
Format & export
Click format, then copy, download, or inspect in tree view.
What is a YAML to TOML Converter?
Convert configuration files seamlessly between YAML and TOML formats with full data type preservation. This tool re-indents and organizes code according to standard style conventions while checking for syntax validity. Everything executes 100% inside your browser, guaranteeing zero latency and complete privacy for API keys, user tokens, and confidential database schemas.
Options Explained
| Option | Description |
|---|---|
| Conversion Direction | Select conversion direction. |
Frequently Asked Questions
Why convert between YAML and TOML?
Both are popular configuration formats. Rust (Cargo.toml) and Python (pyproject.toml) heavily favor TOML for unambiguous tables, while Kubernetes, Docker Compose, and CI/CD favor YAML.
Are nested tables and arrays converted accurately?
Yes. Nested dictionaries convert to TOML `[section.subsection]` tables, and list arrays convert to standard TOML inline arrays.
Is my data uploaded when I use the YAML to TOML Converter?
No. All processing runs entirely in your browser. Nothing is sent to a server unless you explicitly create a share link.
Does this tool work offline?
Yes. After the first visit, the PWA service worker can serve the page and run the formatter without a network connection.
What is the maximum input size?
Most tools accept up to about 5MB in the editor. Very large inputs are processed preferentially in a Web Worker and may download instead of filling the output pane.