TOML (Tom’s Obvious Minimal Language) is the config format of Rust’s Cargo, Python’s pyproject.toml and many modern tools — clearly typed, human-friendly key/value tables.
Typical use: Converting JSON or YAML to TOML feeds the data straight into modern build tools and package configs.
About the TOML format
TOML (Tom's Obvious Minimal Language, 2013) is config written for humans who read diffs: explicit key = value pairs, `[section]` tables, unambiguous types, and comments everywhere. Rust's Cargo, Python's pyproject.toml, and many modern build tools standardized on it exactly because there is no implicit typing and no indentation to get wrong.
The explicitness costs verbosity on deep structures — four levels of nesting in TOML is a stack of bracketed section headers, where YAML would just indent. For flat-to-medium project configuration it is close to ideal; for deeply nested data, JSON or YAML remain easier.
Strengths
- ✓ Unambiguous types and syntax
- ✓ Comment-friendly and diff-friendly
- ✓ Standard for Rust and Python project config
Limitations
- ✗ Deep nesting gets verbose fast
- ✗ Rare in web APIs and serialization
- Structure
- Tables and key/values
- Types / schema
- Explicit types
- Compatibility
- Rust/Python ecosystem
- Best for
- Project and tool configuration
Convert TOML to…
3 direct directions, sorted A–Z; 🔥 marks popular targets.
Convert other files to TOML…
Frequently asked questions
What is a TOML file?
TOML (Tom’s Obvious Minimal Language) is the config format of Rust’s Cargo, Python’s pyproject.toml and many modern tools — clearly typed, human-friendly key/value tables.
How do I convert TOML files online?
Pick a target format from the "Convert TOML to…" list below, drop your file and hit convert. Everything runs in your browser — no install, no upload, no watermark, no limits.
Is it safe to convert TOML files here?
Yes. Every conversion is performed by your own device inside the browser — files never leave for a server, and the page keeps working even offline.
Which formats can TOML convert to?
This page lists all 3 directions across documents, images, audio, video, spreadsheets and archives — each one is its own free converter page.