Convert TOML to Java online, free. TOML is a readable configuration format built around key/value pairs and tables. Java POJOs/records model structured data for the JVM. TOML to Java 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 Java types as POJOs with Jackson annotations following the Java Language Specification 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 Spring/Jackson data binding, Android models and enterprise services.
It maps the full structure of your TOML onto idiomatic Java types, following the Java Language Specification 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 Java types from Java 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 Java, 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 Java equivalent:
TOML input:
host = "db.internal"
port = 5432
secure = trueOutput:
public record Server(
String host,
int port,
boolean secure
) {}Paste your TOML into the editor and press "Convert to Java". The tool parses it against the TOML v1.0.0 grammar, then generates Java types following Java Language Specification 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 Java cleanly. TOML tables become nested Java types, and arrays-of-tables become lists.
Optional or nullable members in the generated Java are inferred from keys missing in some records of your TOML, following Java Language Specification. 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. Java classes (Java) — Java POJOs/records model structured data for the JVM. This converter maps the structure of your TOML onto Java so you can use it for Spring/Jackson data binding.
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 Java accurate.
Yes. The entire TOML-to-Java 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 Java is ready for Spring/Jackson data binding, Android models and enterprise services. Copy or download it and drop it straight into your codebase.
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