TOML to YAML Converter
Paste your TOML configuration and instantly convert it to YAML. Works with Cargo.toml, Hugo configs, pyproject.toml, and any valid TOML file.
TOML and YAML are both human-readable configuration formats used heavily in modern software projects, but sometimes you need to switch between them — whether you're migrating a Hugo site config, adapting a Cargo.toml for another tool, or standardizing your project's config format. Flipper File's TOML to YAML converter does the translation instantly in your browser, with no upload, no login, and no third-party server ever seeing your config data.
How to Convert TOML to YAML
- Paste your TOML — Copy your TOML content from your config file and paste it into the input editor on the left.
- Click Convert — Hit the "Convert to YAML" button to instantly transform your TOML into well-formatted YAML output.
- Review the result — Check the YAML output on the right side of the editor. Type and structure mismatches (if any) are highlighted clearly.
- Copy or download — Click "Copy to Clipboard" to grab the YAML, or use "Download .yaml" to save it as a file.
Why Use Flipper File to Convert TOML to YAML?
- 100% browser-based — Your config data never leaves your machine. No data is sent to any server, making this safe for sensitive configuration files.
- Handles real-world TOML — Correctly converts nested tables, arrays of tables, inline tables, multi-line strings, and all TOML data types to their YAML equivalents.
- Instant conversion — Results appear the moment you click Convert. No waiting, no processing spinners.
- Clean YAML output — The output is properly indented, human-readable YAML that you can paste directly into your project without editing.
- Error feedback — If your TOML has syntax errors, the tool tells you exactly where the problem is so you can fix it before converting.
- No account, no limits — Free to use as many times as you need with no file size limits and no paywalled features.
Frequently Asked Questions
What is TOML?
TOML (Tom's Obvious, Minimal Language) is a configuration file format designed to be easy to read and write. It's commonly used in the Rust ecosystem (Cargo.toml), Hugo static site generator configs, Python's pyproject.toml, and many other modern tools. It emphasizes clarity and maps directly to a hash table/dictionary structure.
What is YAML?
YAML (YAML Ain't Markup Language) is a data serialization format widely used for configuration files, CI/CD pipelines (GitHub Actions, GitLab CI), Kubernetes manifests, Ansible playbooks, and Docker Compose files. It uses indentation to define structure and supports a broad range of data types.
Why would I need to convert TOML to YAML?
Common reasons include migrating from a TOML-based tool (like Hugo) to a YAML-based one (like Jekyll or GitHub Actions), combining configs from different ecosystems, or adapting open-source project configs that use different formats. Kubernetes and most DevOps tooling prefer YAML, so converting TOML configs from Rust or Python projects is a practical everyday need.
Does this tool handle nested tables and arrays correctly?
Yes. TOML's nested tables ([section.subsection]) are correctly mapped to YAML's nested key structure, and TOML's arrays of tables ([[items]]) are converted to YAML sequences. Standard scalar types (strings, integers, floats, booleans, datetimes) are all preserved.
Is my config data safe to paste here?
Absolutely. All conversion happens inside your browser using JavaScript — nothing is ever sent to a server. This makes it safe to paste production config files, API keys stored in config, and any other sensitive settings.
What happens if my TOML has a syntax error?
The converter will display a clear error message identifying the line and nature of the problem. Fix the TOML syntax in the editor and try again.
Can I convert large TOML files?
Yes. Since processing happens in your browser, there's no server-side file size limit. Very large files (hundreds of KB) may take a moment, but most real-world config files convert instantly.
Is the output valid YAML?
Yes — the tool generates spec-compliant YAML 1.2 output. The output is tested to parse correctly. You can further validate it using Flipper File's YAML Highlighter tool.