---
title: "Volume Object"
url: "https://help.maxon.net/c4d/en-us/Content/html/OVOLUME.html"
section_path: "Simulate Menu > The Simulation System > Volume Object"
element_id: "OVOLUME"
description: "This page describes the Volume object in Cinema 4D. It represents OpenVDB voxel grids — from imports, Volume Builders or Pyro caches — and feeds meshing …"
---

# Volume Object

> **Note:** **What is it about?**
>
> This page describes the **Volume object** in **Cinema 4D**. It represents OpenVDB voxel grids — from imports, Volume Builders or Pyro caches — and feeds meshing, rendering or simulation initial states.

Volume objects are created, for example, when you:

- make a Volume Builder or a [Volume Set](https://help.maxon.net/c4d/en-us/Content/html/OVOLUMESET.html.md) editable.
- detach selected components of a volume in the list of the *Volume Set object* via its **Detach** button.
- import a \*.vdb file.

Each *Volume object* represents a set of OpenVDB or voxel grids with linked, external \*.vdb file (which may not be created until the scene is saved). Volume objects can be used for meshing or the definition of Initial States of a Pyro simulation, among other things. You will find examples of this in the description of the [Volume Set object](https://help.maxon.net/c4d/en-us/Content/html/OVOLUMESET.html.md) and in the explanation of the [Pyro Scene parameters](https://help.maxon.net/c4d/en-us/Content/html/OPBDSCENE-PBDSCENE_GROUP_PYROPROPERTIES.html.md) on the *Pyro Output object*.

> **Tip:** Note:By the way, you can find out about the Voxel Size of the imported volume by taking a look at the Scale values in the Coordinates tab. This can be quite handy if you in group the Volume object to a Volume Builder and that uses the same Voxel Size. This can speed up processing because there is no need to resample (if both Voxel grids are congruent).