这篇文章讨论什么是STP文件以及如何在Windows 11/10中打开此类文件。STP或STEP是以^(STEP)产品数据交换标准^{(Standard for the Exchange of Product Data)}( STEP ) 格式保存的 3D 装配文件。基本上^(Basically)，STP文件用于存储 3D 模型并在CAM和CAD软件之间传输 3D 数据。STP文件以基于文本的ASCII格式存储在STEP 应用程序协议 ISO^{(STEP Application Protocols ISO)} 10303-2xx 规则中。

现在，您如何在 Windows 10 PC 上查看.stp/ .step文件中的 3D 模型？^(.step)3D Viewer^(Viewer)或Paint 3D等原生 3D 应用程序不允许您打开STEP文件。因此，您将不得不使用允许您打开STP^(STP)文件的第三方工具。在本文中，我将分享免费软件和在线 Web 服务，以在Windows 11/10STP或STEP文件。让我们开始吧！

如何在Windows 11/10STP/STEP文件？

以下是在Windows 11/10 上查看STP文件的方法：^(STP)

1. 使用FreeCAD等免费软件查看STP文件。
2. ^{(View STP)}使用Autodesk Viewer等免费在线服务^{(Autodesk Viewer)}查看 STP文件。

让我们详细讨论这些方法！

1]使用免费软件

有一些选定的免费软件支持STP文件并允许您打开和查看它们。以下是可用于在Windows 10中可视化^{(Windows 10)}STP模型的软件：

• 自由CAD
• VariCAD 查看器
• BRL-CAD
• gCAD3D
• STP 查看器

下面就来详细说说这些STP文件查看器软件吧！

自由CAD

FreeCAD是一款免费的开源CAD设计软件，可让您查看STP文件。它也可以用来查看其他各种2D/3D模型文件，如DWG、DXF、OBJ、DAE、PLY、IGS、IFC、STL、WRL、VRML等。在其中，您可以找到各种可视化工具例如不同的绘制风格、移动、平移、旋转、放大/缩小、多种视图模式等。它还提供了一个测量功能来检查模型中两点之间的长度。

它也可用于编辑STP文件，因为它主要是2D/ 3D CAD software。为此，它提供了不同的工作台；您可以选择要编辑 3D 模型的工具类型。此外，它还允许您将STP转换为其他受支持的 3D 文件格式。

VariCAD 查看器

VariCAD Viewer是一款适用于^(Viewer)Windows 10的不错的免费STP文件查看器。您可以使用它来查看STP和DWG以及DXF文件。它提供了多种良好的查看工具，如导航面板、缩放、旋转、平移、后视图、前视图、底视图、垂直于平面的视图、等距视图等。它在工具栏上提供了一些测量工具，您可以使用这些工具测量固体的体积、重心坐标、质量密度、表面积和转动惯量。您还可以查看 3D 对象、空间和距离信息。

除了查看STP文件外，它还可用于将STP转换为高分辨率图像。它包含一个批量文件转换^{(Batch File Conversion)}功能，您可以使用该功能将文件从一种格式批量转换为另一种格式，例如，STEP到IGES，STEP到STL等。

BRL-CAD

BRL-CAD是一款免费的建模软件，可让您在Windows 10上可视化^{(Windows 10)}STP文件。它提供了方便的查看工具，可以从不同方向正确查看STP模型。^(STP)它的一些工具包括测量工具、启用照明选项、缩放视图、组件选择模式、光线跟踪功能、旋转等。您还可以使用它编辑STP文件。

gCAD3D

gCAD3D是适用于^(gCAD3D)Windows 10的免费开源STP文件查看器。您甚至可以使用它来编辑STP文件。它为您提供标准视图功能，如多种视图模式（顶部、底部、前部等）、阴影选项等。您还可以在其中查看IGES、DXF、VRML、SVG和更多文件。

STP 查看器

STP Viewer是一款专用的免费软件，可用于在^{(STP Viewer)}Windows 10中打开和查看STP文件。您可以在不同的视图方向和模式下查看模型，例如顶部、底部、前部、后部、左侧、右侧、侧面等。此外，还具有正常缩放、动态缩放、动态平移、全局平移、动态旋转等功能也由它提供。

您可以从stpviewer.com获取此软件。

2]使用Autodesk Viewer等免费在线工具^{(Autodesk Viewer)}查看 STP文件^{(View STP)}

有一些免费的在线工具可以让您查看STP文件。以下是一些更好的在线STP文件查看器网站，您可以使用它们来可视化保存在^(STP)STP文件中的 3D 模型：

1. AutodeskViewer.com
2. 3DViewerOnline.com
3. 3DUsher.com

就像任何在线工具一样，您可以在网络浏览器中打开这些查看器，从您的 PC 中导入STP文件，然后查看保存在其中的 3D 模型。这些提供了所有方便的工具来正确查看和分析STP文件，例如更改视图模式、测量点之间的距离、放大/缩小、平移、旋转等。这些 Web 服务还允许您查看其他CAD文件，包括IGES、OBJ、PLY、DWG、DXF等

就是这样！

现在阅读：^{(Now read:)} 什么是 STL 文件以及如何查看它？^{(What is STL File and how to view it?)}

What is STP file? How to view an STP/STEP file in Windows 11/10?

This post talkѕ about what іs an STP file and how yoυ can open such files in Windows 11/10. STP or STEP is a 3D assembly file saved in Standard for the Exchange of Product Data (STEP) format. Basically, an STP file is used to store 3D models and to transfer 3D data between CAM and CAD software. STP file is stored in text-based ASCII format in STEP Application Protocols ISO 10303-2xx rules.

Now, how can you view a 3D model present in the .stp/ .step file on your Windows 10 PC? The native 3D apps like 3D Viewer or Paint 3D don’t let you open a STEP file. So, you will have to use a third-party tool that allows you to open an STP file. In this article, I will share free software and online web services to visualize STP or STEP files on Windows 11/10. Let’s get started!

How to view an STP/STEP file in Windows 11/10?

Here are the methods to view STP files on your Windows 11/10:

1. Use a free software like FreeCAD to view STP files.
2. View STP files using a free online service like Autodesk Viewer.

Let us discuss these methods in detail!

1] Use a free software

There are some selected freeware available that support STP files and let you open and view them. Here are the software that you can use to visualize an STP model in Windows 10:

• FreeCAD
• VariCAD Viewer
• BRL‑CAD
• gCAD3D
• STP Viewer

Let’s talk about these STP file viewer software in detail!

FreeCAD

FreeCAD is a free and open-source CAD designing software that allows you to view STP files. It can be used to view various other 2D/ 3D model files too, such as DWG, DXF, OBJ, DAE, PLY, IGS, IFC, STL, WRL, VRML, etc. In it, you can find a variety of visualization tools such as different draw styles, move, pan, rotate, zoom in/ out, multiple view modes, etc. It also provides a measurement feature to check the length between two points in a model.

It can also be used to edit STP files as it is primarily a 2D/ 3D CAD software. For that, it offers different workbenches; you can choose the type of tools you want to edit the 3D model. Also, it lets you convert STP to other supported 3D file formats.

VariCAD Viewer

VariCAD Viewer is a nice free STP file viewer for Windows 10. You can use it to view STP and DWG and DXF files. It offers multiple good viewing tools like navigation panel, zoom, rotate, pan, back view, front view,  bottom view, view perpendicularly to plane, isometric view, and more. It provides some measurement tools on the toolbar using which you can measure the volume of the solid, center of gravity coordinates, mass density, surface area, and moment of inertia. You can also view 3D object, space, and distance information.

Apart from viewing STP files, it can be used to convert STP to a high-resolution image. It contains a Batch File Conversion feature using which you can batch convert files from one format to another, e.g., STEP to IGES, STEP to STL, etc.

BRL-CAD

BRL-CAD is a free modeling software that lets you visualize STP files on Windows 10. It provides handy view tools to properly view an STP model from different orientations. Some of its tools include a measurement tool, enable lighting option, scale view, component select mode, ray trace function, rotate, etc. You can also edit STP files using it.

gCAD3D

gCAD3D is a free and open-source STP file viewer for Windows 10. You can even edit STP files using it. It provides you standard view features like multiple view modes (top, bottom, front, etc.), shades options, etc. You can also view IGES, DXF, VRML, SVG, and more files in it.

STP Viewer

STP Viewer is a dedicated freeware that you can use to open and view STP files in Windows 10. You can view a model in different view orientations and modes, like top, bottom, front, back, left, right, side, etc. Additionally, features like normal zoom, dynamic zoom, dynamic pan, global pan, dynamic rotation, and more also offered by it.

You can get this software from stpviewer.com.

2] View STP file using a free online tool like Autodesk Viewer

There are some free online tools that enable you to view STP files. Here are some of the better online STP file viewer websites that you can use to visualize 3D models saved in STP file:

1. AutodeskViewer.com
2. 3DViewerOnline.com
3. 3DUsher.com

Just like any online tool, you can open these viewers in your web browser, import STP file from your PC, and then view the 3D model saved in it. These provide all nice handy tools to view and analyze an STP file properly, like change view mode, measure the distance between points, zoom in/ out, pan, rotate, etc. These web services also let you view other CAD files including IGES, OBJ, PLY, DWG, DXF, etc.

That’s it!

Now read: What is STL File and how to view it?

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