---
title: sizeAllocated
framework: system
role: symbol
role_heading: Instance Property
path: system/stat/sizeallocated
---

# sizeAllocated

Total size allocated, in bytes

## Declaration

```swift
var sizeAllocated: Int64 { get }
```

## Discussion

Discussion The semantics of this property are tied to the underlying C st_blocks field, which can have file-system–dependent behavior. note: Calculated as 512 * blocksAllocated.