2025-09-05 14:59:21 +08:00

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# system-architecture
> Get the operating system CPU architecture
[`process.arch` / `os.arch()`](https://nodejs.org/api/process.html#processarch) is generally not useful as it returns the CPU architecture for which the Node.js binary was compiled, not the actual system architecture.
For browser usage, you probably want [`is64bit`](https://github.com/sindresorhus/is64bit) instead.
## Install
```sh
npm install system-architecture
```
## Usage
```js
import {systemArchitecture} from 'system-architecture';
// On ARM64 macOS
console.log(await systemArchitecture());
//=> 'arm64'
```
## API
### systemArchitecture()
Returns a promise for a CPU architecture name. See [`process.arch`](https://nodejs.org/api/process.html#processarch) for possible values.
### systemArchitectureSync()
Returns a CPU architecture name. See [`process.arch`](https://nodejs.org/api/process.html#processarch) for possible values.
## Note
This should really be in Node.js core, but they are [not pragmatic](https://github.com/nodejs/node/issues/17036).
## Related
- [is64bit](https://github.com/sindresorhus/is64bit) - Check whether operating system CPU architecture is 64-bit or 32-bit