How do I convert JSON to TOML online?

Paste your JSON into the input box and click convert. The tool instantly generates valid TOML output you can copy or download.

Is my JSON data safe when converting to TOML?

Yes. All conversions happen in your browser. No data is uploaded or stored on any server, ensuring complete privacy.

Can this tool handle nested JSON objects?

Yes. The converter preserves nested structures and outputs properly formatted TOML tables and arrays.

Do I need to install anything to use the JSON to TOML tool?

No installation is required. The tool runs entirely in your browser, so you can use it instantly without downloads or setup.

Tool Spotlight

JSON → TOML

Q: What is TOML used for?

TOML (Tom's Obvious Minimal Language) is a configuration file format commonly used in Rust projects, Hugo static sites, and tools like Terraform.

Quickly transform JSON into well-formatted TOML.

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🔽 JSON Input

JSON

📂 TOML Output

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Instant Conversion

Convert your data in real-time as you type. No delays, no waiting.

100% Private

All processing happens in your browser. Your data never leaves your device.

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No hidden fees, no premium plans. All features are completely free forever.

What is JSON to TOML Converter?

Our JSON to TOML converter lets you instantly transform structured JSON data into clean, human-readable TOML (Tom’s Obvious Minimal Language) format. TOML is a configuration file format widely used in Rust, Python, Go, and modern deployment setups. This tool helps developers convert their JSON data into TOML syntax effortlessly — ready for configuration files, CI/CD pipelines, or application settings.

Instant TOML Conversion

Transform any valid JSON object into properly formatted TOML with one click — fast and accurate.

Developer-Friendly Format

Perfect for developers using Rust, Python, or Go projects where TOML is the preferred configuration language.

Clean, Readable Output

Produces neatly indented TOML with clear key-value mapping — ideal for configuration files and version control.

Why Use JSON to TOML Converter?

Simplify Config File Creation

TOML is designed to be easy to read and write. Convert complex JSON configuration data into TOML files instantly without manual rewriting.

Integrate with Modern Frameworks

Many frameworks like Rust’s Cargo, Python’s Poetry, and Go modules use TOML configuration. Our tool helps you quickly prepare compatible TOML files.

Ensure Accuracy in Conversion

Avoid syntax errors when switching formats — the converter automatically handles nested objects, arrays, and strings safely.

Ideal for DevOps and Deployment

TOML is commonly used for storing app settings, CI/CD configs, and deployment metadata. Quickly generate valid TOML for your workflow.

How to Use the JSON to TOML Converter

Paste Your JSON Data

Copy your JSON object or configuration file and paste it into the left editor. You can also upload a .json file from your device.

{
  "server": {
    "host": "localhost",
    "port": 8080
  },
  "database": {
    "user": "admin",
    "password": "secret"
  }
}

Click the “Convert” button to instantly generate the corresponding TOML format on the right. Nested JSON keys are automatically mapped to TOML tables.

The tool automatically generates a TypeScript interface in the right panel. It detects types, handles nested objects, and creates proper interface names.

[server]
host = "localhost"
port = 8080

[database]
user = "admin"
password = "secret"

Copy or Download TOML

Use the “Copy” button to copy the TOML code or download it as a .toml file for use in your project configuration folder.

Pro Tips

•TOML is ideal for configuration files because of its simplicity and readability.
•Use this tool when migrating projects from JSON to Rust or Python where TOML is required.
•Supports nested objects, arrays, and complex JSON structures.
•Ensure your JSON is valid and properly formatted for the most accurate TOML output.

Frequently Asked Questions

What is TOML used for?

TOML (Tom's Obvious, Minimal Language) is commonly used for configuration files in tools like Cargo (Rust), pipenv (Python), and various deployment tools. It's more readable than JSON for configs.

Are nested objects supported?

Yes! TOML supports nested tables (objects). The converter properly structures nested objects using TOML's table syntax, making your config files clean and organized.

Can I convert complex JSON structures?

Absolutely! The tool handles arrays, nested objects, different data types, and complex structures. However, keep in mind TOML has some limitations compared to JSON (like no null values).

Is the output ready to use?

Yes! The generated TOML is valid and ready to use in your projects. Just copy and paste it into your configuration file.

Is this tool really free?

Yes! JSONToAll is completely free to use with no hidden fees, registration requirements, or usage limits. All processing happens in your browser, so we don't even store your data.

Is my data safe and private?

Absolutely! All conversion happens entirely in your browser using JavaScript. Your data never leaves your device or gets sent to our servers. You can even use this tool offline once the page loads.

Do I need to install anything?

No installation required! This is a browser-based tool that works instantly. Just visit the page, use the tool, and you're done. No downloads, no setup, no configuration needed.

Can I use this for large files?

Yes! The tool can handle large and complex data structures. However, extremely large files (10MB+) might slow down your browser since all processing happens client-side. For best performance, use files under 5MB.

Ready to Convert JSON to TOML Config Files?

Transform JSON into TOML format for Rust, Python, and other modern configuration files. Get human-readable config files with minimal effort.