---
title: smoothRadius
product: Unity Editor
version: '7000.0'
latest_version: '7000.0'
status: This page documents version 7000.0. The latest version is 7000.0.
canonical: https://docs.unity.com/en-us/engine/7000.0/script-reference/unityeditor/terraintools/terrainsculptsettings/smoothradius
latest_url: https://docs.unity.com/en-us/engine/7000.0/script-reference/unityeditor/terraintools/terrainsculptsettings/smoothradius.md
last_updated: 2026-10-20
generated_at: 2026-11-11T13:12:59.199Z
locale: en-us
---

# smoothRadius

> The averaging radius for TerrainSculptOperation.Smooth. 0 uses two heightmap cells. Must not exceed the diagonal of the Terrain.

## Definition

* **Type:** Property
* **Namespace:** [UnityEditor.TerrainTools](/engine/7000.0/script-reference/unityeditor/terraintools.md)
* **Assembly:** UnityEditor

```csharp
public float smoothRadius { get; set; }
```

### Remarks

Smoothing is a box average over the square of samples within this radius, applied twice (once per axis). It does not match the Smooth Height brush, which weighs neighbors by the brush.