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+---
+name: Set environment variables
+---
+
+The current environment variables can be accessed via `process.env` or `Bun.env`.
+
+```ts
+Bun.env.API_TOKEN; // => "secret"
+process.env.API_TOKEN; // => "secret"
+```
+
+---
+
+Set these variables in a `.env` file.
+
+Bun reads the following files automatically (listed in order of increasing precedence).
+
+- `.env`
+- `.env.production` or `.env.development` (depending on value of `NODE_ENV`)
+- `.env.local`
+
+```txt#.env
+FOO=hello
+BAR=world
+```
+
+---
+
+Variables can also be set via the command line.
+
+```sh
+$ FOO=helloworld bun run dev
+```
+
+---
+
+See [Docs > Runtime > Environment variables](/docs/cli/run#environment-variables) for more information on using environment variables with Bun.