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Convert TOML to Environment Variables - Complete Guide

Step 1

Input Your TOML Configuration

Get your TOML configuration ready. You have several convenient options:

•
Paste directly: Copy your TOML from Rust projects or Python configs
•
Upload file: Click the Upload button to select a .toml file
•
Try sample: Click the Sample button to see an example with nested config

TOML input example:

[database]
host = "localhost"
port = 5432
enabled = true
Step 2

Automatic Conversion to ENV Format

Watch as your TOML is transformed into environment variables format. The converter provides:

•
Underscore notation: Nested structures become DATABASE_HOST
•
Array handling: Both comma-separated and indexed formats for compatibility
•
Perfect for Docker: Ready for Docker Compose and Kubernetes

ENV output example:

DATABASE_HOST=localhost
DATABASE_PORT=5432
DATABASE_ENABLED=true
Step 3

Download as .env File

Once converted, download the output as a .env file ready for use in your Docker containers, Kubernetes deployments, or environment configuration.

FAQs About TOML to ENV Conversion

Why convert TOML to environment variables?

Environment variables are the standard for configuring containerized applications, following the 12-factor app methodology. Converting TOML to ENV format makes your configuration portable across Docker, Kubernetes, and cloud platforms while keeping your code and config separate.

How are nested TOML sections converted?

Nested sections are flattened using underscore notation. For example, [database.credentials] with username = "admin" becomes DATABASE_CREDENTIALS_USERNAME=admin. All keys are converted to uppercase following standard ENV conventions.

How are arrays handled in ENV format?

Arrays are converted in TWO ways for compatibility: 1) Comma-separated: API_KEYS=key1,key2,key3, and 2) Indexed: API_KEYS_0=key1, API_KEYS_1=key2. This ensures compatibility with different applications and frameworks.

Can I use this with Docker Compose?

Absolutely! Download the generated .env file and place it in your Docker Compose directory. Docker Compose will automatically load these variables. You can also use them in Kubernetes ConfigMaps or as environment variables in any containerized application.

What other TOML conversion tools are available?

We offer a complete suite: TOML to JSON, TOML to YAML, TOML to XML, TOML Formatter, and TOML Validator.

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