JSON to TOML

Convert between JSON and TOML

How to Use

Paste JSON

Enter your JSON content in the input area.

Convert

Click Convert to transform to TOML format.

Review output

Check the TOML structure is correct.

Copy TOML

Copy for use in config files like pyproject.toml or Cargo.toml.

Frequently Asked Questions

What is TOML?

TOML (Tom's Obvious Minimal Language) is a configuration file format designed to be easy to read. It's commonly used for Cargo.toml, pyproject.toml, and other config files.

Why convert JSON to TOML?

TOML is more readable for configuration files and supports comments. Many modern tools (Rust, Python packaging) prefer TOML format.

Does TOML support all JSON features?

TOML supports strings, numbers, booleans, arrays, and tables (objects). Nested arrays of tables have special syntax. Null values aren't directly supported.

Is my data private?

Yes, all conversion happens locally in your browser. Nothing is sent to any server.