Free TOML to JSON Converter

How to Convert TOML to JSON Online

Paste your TOML into the left panel and JSON output appears instantly on the right. Tables become nested JSON objects, arrays map directly, and all TOML types (strings, numbers, booleans, dates) are preserved.

When to Use TOML to JSON

Useful when you need to read TOML config values programmatically, compare configurations across formats, or import TOML data into tools that expect JSON. Also helpful for debugging — JSON is easier to validate and query with tools like jq.

Frequently Asked Questions

What TOML features are supported?

The parser supports key-value pairs, quoted and bare keys, strings (basic and literal), integers, floats, booleans, dates, arrays, and tables ([section] headers). This covers the vast majority of real-world TOML files.

Can it parse Cargo.toml and pyproject.toml?

Yes — the parser handles the TOML features used by Cargo (Rust), pyproject.toml (Python), Hugo, and other common tools.

Is this converter free?

Yes — completely free, forever. No sign-up, no account, no usage limits.

Is my data safe?

All conversion happens locally in your browser using JavaScript. Your TOML is never uploaded to any server.

Can I convert JSON back to TOML?

Yes — use the JSON to TOML converter at json2xml.com/json-to-toml to convert JSON back to TOML.