# Vector3.DistanceBetween

```csharp
static float DistanceBetween(in Vector3 a, in Vector3 b)
```

Returns distance between the 2 given vectors.

### Parameters

- `in a` (`Vector3`)
- `in b` (`Vector3`)

### Returns

`float`

Declared in [Vector3](/api/Vector3).
Assembly: `Sandbox.System`.