# GridTrackSizeUnit

> Unit for a single GridTrackSize sizing value.

## Definition

* **Type:** Enum
* **Namespace:** [UnityEngine.UIElements](/engine/6000.7/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule

```csharp
public enum GridTrackSizeUnit
```

## Fields

| Value                                                                                                | Description                                                                    |
| ---------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------ |
| [Auto](/engine/6000.7/script-reference/unityengine/uielements/gridtracksizeunit/auto.md)             | The track is sized automatically from its content.                             |
| [Fraction](/engine/6000.7/script-reference/unityengine/uielements/gridtracksizeunit/fraction.md)     | A flexible fraction (`fr`) of the leftover space.                              |
| [MaxContent](/engine/6000.7/script-reference/unityengine/uielements/gridtracksizeunit/maxcontent.md) | The largest maximal content contribution of the track's items (`max-content`). |
| [MinContent](/engine/6000.7/script-reference/unityengine/uielements/gridtracksizeunit/mincontent.md) | The largest minimal content contribution of the track's items (`min-content`). |
| [Percent](/engine/6000.7/script-reference/unityengine/uielements/gridtracksizeunit/percent.md)       | A percentage of the grid container's corresponding dimension.                  |
| [Pixel](/engine/6000.7/script-reference/unityengine/uielements/gridtracksizeunit/pixel.md)           | A fixed pixel length.                                                          |