Convert JSON to TOML Online Free
Convert JSON into TOML right in your browser, with no data uploaded.
Note: TOML does not accept null values.
🔒 100% client-side — no data sent
Instantly turn your JSON data into the more readable TOML configuration format. Everything runs 100% in your browser, so no data ever leaves your machine and your privacy stays protected.
What is it for?
- ▸ Migrate a JSON config file to TOML for a Rust or Python project
- ▸ Generate a pyproject.toml from an existing JSON structure
- ▸ Make a configuration more human-readable before committing it
- ▸ Quickly convert JSON API data to TOML for local testing
FAQ
How do I convert a JSON file to TOML?
Paste your JSON into the input field and the equivalent TOML appears automatically, ready to copy or download.
What is the difference between JSON and TOML?
JSON is a universal data-interchange format, while TOML is designed to be easy for humans to read and write by hand, making it ideal for configuration files.
Is my JSON data sent to a server?
No, the conversion happens entirely in your browser. No data is ever transmitted or stored online.