# FileSize

> Indicates the size of the file in bytes.

## Definition

* **Type:** Field
* **Namespace:** [Unity.IO.LowLevel.Unsafe](/engine/6000.3/script-reference/unity/io/lowlevel/unsafe.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public long FileSize
```

### Remarks

If the file exists, this member reports the size of the file in bytes. If the file was not found, the file size is reported as zero.