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Converters

JSON to .env Converter

Flatten nested JSON objects into key-value environment variables and vice versa.

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How to Use JSON to .env Converter

  1. Paste your JSON configuration or .env file.
  2. Click "JSON → .env" or ".env → JSON".
  3. Copy the converted configuration format.

Frequently Asked Questions

How are nested objects flattened into .env keys?

Nested keys are joined with underscores in uppercase (e.g. `{ database: { host: "..." } }` becomes `DATABASE_HOST="..."`).

Sources & References

Primary references: RFC 8259: The JavaScript Object Notation (JSON) Data Interchange Format; Node.js: DotEnv file format.

Review policy: references and behavior notes are checked whenever the tool implementation changes.