---
title: NSCollectionLayoutSize
framework: uikit
role: symbol
role_heading: Class
path: uikit/nscollectionlayoutsize
---

# NSCollectionLayoutSize

The width and the height of an item in a collection view.

## Declaration

```swift
@MainActor class NSCollectionLayoutSize
```

## Overview

Overview A size is a pair of dimensions (NSCollectionLayoutDimension): a width dimension and a height dimension. Every component of a collection view layout has an explicit size.

## Topics

### Creating a layout size

- [init(widthDimension:heightDimension:)](uikit/nscollectionlayoutsize/init(widthdimension:heightdimension:).md)

### Getting the width and height

- [widthDimension](uikit/nscollectionlayoutsize/widthdimension.md)
- [heightDimension](uikit/nscollectionlayoutsize/heightdimension.md)

## Relationships

### Inherits From

- [NSObject](objectivec/nsobject-swift.class.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSCopying](foundation/nscopying.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)
- [Sendable](swift/sendable.md)

## See Also

### Size and spacing

- [NSCollectionLayoutDimension](uikit/nscollectionlayoutdimension.md)
- [NSCollectionLayoutSpacing](uikit/nscollectionlayoutspacing.md)
- [NSCollectionLayoutEdgeSpacing](uikit/nscollectionlayoutedgespacing.md)
- [NSCollectionLayoutContainer](uikit/nscollectionlayoutcontainer.md)