# mass

> The calculated mass of the body, usually in kilograms. This can be accessed as a union of _mass, _rotationalInertia and _localCenterOfMass using _massConfiguration.

## Definition

* **Type:** Property
* **Namespace:** [Unity.U2D.Physics](/engine/6000.5/script-reference/unity/u2d/physics.md)
* **Assembly:** UnityEngine.PhysicsCore2DModule

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