Convert TOML to Rust online, free. TOML is a readable configuration format built around key/value pairs and tables. Rust structs with serde derives serialize/deserialize data safely and fast. TOML to Rust conversion parses your TOML against the TOML v1.0.0 grammar (https://toml.io/en/v1.0.0), builds an in-memory model of its keys, nested objects and arrays, then emits ready-to-use Rust types with serde #[derive(Serialize, Deserialize)] attributes following the Serde conventions. Processing runs in your browser in JavaScript with no upload or server round-trip — no size limit beyond your device's memory, so multi-megabyte documents convert in milliseconds and sensitive payloads never leave your machine. Typical uses include Rust services & CLIs, WASM modules and high-performance parsing.
It maps the full structure of your TOML onto idiomatic Rust types, following the Serde conventions. 100% free, no registration, and complete privacy — everything runs locally in your browser, so your data never touches a server.
Paste TOML and generate Rust types from Rust immediately. Conversion runs client-side, so there is no upload wait and large documents stay fast.
Nested TOML objects, tables and arrays are mapped faithfully onto Rust, including nested types and optional fields.
Your TOML never leaves your device — everything is processed locally in JavaScript, with nothing logged or stored.
Unlimited conversions with no account, no quotas, and no watermark. Works on desktop and mobile.
A TOML document and its Rust equivalent:
TOML input:
host = "db.internal"
port = 5432
secure = trueOutput:
#[derive(Serialize, Deserialize)]
struct Server {
host: String,
port: i64,
secure: bool,
}Paste your TOML into the editor and press "Convert to Rust". The tool parses it against the TOML v1.0.0 grammar, then generates Rust types following Serde conventions — instantly and entirely in your browser. You can validate or format the TOML first to be sure it is clean.
TOML values are typed and it has first-class dates and times, so they carry into Rust cleanly. TOML tables become nested Rust types, and arrays-of-tables become lists.
Optional or nullable members in the generated Rust are inferred from keys missing in some records of your TOML, following Serde. Include the optional fields in your sample so they are typed correctly.
TOML (Tom's Obvious Minimal Language) (TOML) — TOML is a readable configuration format built around key/value pairs and tables. Rust structs (Rust) — Rust structs with serde derives serialize/deserialize data safely and fast. This converter maps the structure of your TOML onto Rust so you can use it for Rust services & CLIs.
Yes. Invalid TOML is flagged with a clear error before anything is converted. Common TOML problems to check are correct key/value pairs, quoted strings, and valid [table] headers. Starting from clean input keeps the generated Rust accurate.
Yes. The entire TOML-to-Rust conversion runs locally in your browser in JavaScript — your TOML is never uploaded, logged or stored. That matters when the data is something like Rust Cargo & Python pyproject config, which should not leave your machine.
The generated Rust is ready for Rust services & CLIs, WASM modules and high-performance parsing. Copy or download it and drop it straight into your codebase.
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