Input TOML

Converted JSON

What is TOML to JSON Converter?

Need to convert your TOML (Tom's Obvious, Minimal Language) configuration files to JSON (JavaScript Object Notation)? This tool converts TOML to JSON instantly. Perfect for converting TOML config files to JSON format for APIs or web applications.

According to the TOML v1.0.0 specification, TOML is a configuration file format that's easy to read and write. JSON is the standard format for APIs and data exchange. Converting TOML to JSON makes your configuration data accessible in JSON-based systems or APIs.

Everything happens in your browser – your TOML never leaves your computer. Convert, download, and use your JSON file right away.

How to Use TOML to JSON

Paste, Upload, or Load Sample

Paste TOML into the left Input TOML panel, or click Upload to load a .toml file. Click Sample to load example TOML. Example:

View JSON Output

The right Converted JSON panel shows the conversion instantly. TOML tables become objects, arrays become arrays, and all values are preserved per the JSON RFC 8259 specification. Invalid TOML will show an error.

Download or Copy

Click Download to save the .json file, or Copy to copy to your clipboard. All processing runs in your browser – your data never leaves your computer.

When You'd Actually Use This

API Development

Convert TOML configuration to JSON for APIs. Many APIs use JSON format, and this tool helps you convert TOML configs to JSON.

Format Migration

Migrating from TOML configs to JSON? This tool makes it easy. Convert your existing TOML configuration files to JSON format quickly.

Web Applications

Convert TOML to JSON for use in web applications. Many web apps use JSON for configuration, and this converter helps you migrate from TOML.

Tool Compatibility

Some tools require JSON format. Convert your TOML data to JSON when working with JSON-based systems or APIs.

Common Questions

Is my TOML data stored?

Nope. Everything happens right in your browser. Your TOML Specification never leaves your computer – we don't even see it.

What TOML formats work?

The converter works with any valid TOML structure – tables, arrays, nested tables, and mixed types. It analyzes the structure and converts it to equivalent JSON. Check out the Cargo.toml for more details.

How are TOML tables handled?

TOML tables become JSON objects. Arrays stay as arrays, and all data types (strings, numbers, booleans, dates) are preserved correctly.

Can I convert JSON back to TOML?

Yep. Use our JSON to TOML converter to convert JSON files back to TOML format.

What if my TOML has special characters?

Special characters are properly handled in JSON. Strings with quotes or other JSON syntax characters are escaped correctly.

Does it work with large TOML files?

Yep. Since everything happens in your browser, it depends on your device. Small to medium TOML files convert instantly. Really huge files might take a few seconds.

Other TOML Tools You Might Need

Conversion is just one TOML task. Here are other tools that work well together: