YAML to .env Converter
Convert YAML configuration to .env format. Nested keys are flattened to UPPER_SNAKE_CASE KEY=VALUE pairs.
What Is YAML to .env Converter?
This tool converts YAML configuration files to .env format — flat KEY=VALUE pairs used by Docker, Node.js (dotenv), and most CI/CD systems. Nested YAML keys are flattened using underscore-separated uppercase names.
How to Use
- Paste your YAML into the input area
- The .env output appears instantly on the right
- Copy the result and paste into your .env file
Features
- Flattens nested keys:
database.host→DATABASE_HOST - Automatically quotes values with spaces or special characters
- Arrays converted to comma-separated strings
- 100% client-side — no data sent to any server
FAQ
How are nested keys named?
Nested keys are joined with underscores and uppercased. For example, server.port becomes SERVER_PORT.
How are YAML arrays handled?
Arrays are converted to comma-separated strings. For example, ["a", "b"] becomes KEY=a,b.
Are values with spaces quoted?
Yes. Values containing spaces, #, or double quotes are automatically wrapped in double quotes in the output.