---
title: "convertToBacking(_:)"
framework: appkit
role: symbol
role_heading: Instance Method
path: "appkit/nswindow/converttobacking(_:)"
---

# convertToBacking(_:)

Converts a rectangle from the window’s coordinate system to its pixel-aligned backing store coordinate system.

## Declaration

```swift
func convertToBacking(_ rect: NSRect) -> NSRect
```

## Parameters

- `rect`: A rectangle in the window’s coordinate system.

## Return Value

Return Value A rectangle in its pixel-aligned backing store coordinate system.

## See Also

### Converting Coordinates

- [backingScaleFactor](appkit/nswindow/backingscalefactor.md)
- [backingAlignedRect(_:options:)](appkit/nswindow/backingalignedrect(_:options:).md)
- [convertFromBacking(_:)](appkit/nswindow/convertfrombacking(_:).md)
- [convertFromScreen(_:)](appkit/nswindow/convertfromscreen(_:).md)
- [convertPointFromBacking(_:)](appkit/nswindow/convertpointfrombacking(_:).md)
- [convertPoint(fromScreen:)](appkit/nswindow/convertpoint(fromscreen:).md)
- [convertToScreen(_:)](appkit/nswindow/converttoscreen(_:).md)
- [convertPointToBacking(_:)](appkit/nswindow/convertpointtobacking(_:).md)
- [convertPoint(toScreen:)](appkit/nswindow/convertpoint(toscreen:).md)