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# ByteCountFormatter.CountStyle

Specifies display of file or storage byte counts. The display style is platform specific.

```
enum CountStyle
```

## Topics

### Constants

[`ByteCountFormatter.CountStyle.file`](/documentation/Foundation/ByteCountFormatter/CountStyle-swift.enum/file)

Specifies display of file byte counts. The actual behavior for this is platform-specific; in macOS 10.8, this uses the decimal style, but that may change over time.

[`ByteCountFormatter.CountStyle.memory`](/documentation/Foundation/ByteCountFormatter/CountStyle-swift.enum/memory)

Specifies display of memory byte counts. The actual behavior for this is platform-specific; in macOS 10.8, this uses the binary style, but that may change over time.

[`ByteCountFormatter.CountStyle.decimal`](/documentation/Foundation/ByteCountFormatter/CountStyle-swift.enum/decimal)

Causes 1000 bytes to be shown as 1 KB. It is better to use [`ByteCountFormatter.CountStyle.file`](/documentation/Foundation/ByteCountFormatter/CountStyle-swift.enum/file) or [`ByteCountFormatter.CountStyle.memory`](/documentation/Foundation/ByteCountFormatter/CountStyle-swift.enum/memory) in most cases.

[`ByteCountFormatter.CountStyle.binary`](/documentation/Foundation/ByteCountFormatter/CountStyle-swift.enum/binary)

Causes 1024 bytes to be shown as 1 KB. It is better to use [`ByteCountFormatter.CountStyle.file`](/documentation/Foundation/ByteCountFormatter/CountStyle-swift.enum/file) or [`ByteCountFormatter.CountStyle.memory`](/documentation/Foundation/ByteCountFormatter/CountStyle-swift.enum/memory) in most cases.


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