STP File Extension

STP file icon
STEP 3D CAD Format
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What is STP file?

STP file contains 3D object project saved in STEP (Standard for the Exchange of Product Data) format. STP format is similar to less frequently used STEP format. STP is a ASCII text file that conforms to ISO 10303-11 standard specification, sometimes referred to as EXPRESS. The format is platform-independent. It was developed as an universal, nonproprietary standard to facilitate 2D/3D project data exchange between applications. Development of STP started in 1984 with the aim to standardize data exchange process for PLM (Product Lifecycle Management) systems.

STP files are also used for sharing and archiving data. The parts of STEP standard related to CAD applications are designated 2xx. Main protocols for 3D modeling were redefined in 2014 and specified in AP 242 document, which combined and replaced the following documents:

  • AP 201 – simple 2D drawing geometry,
  • AP 202 – 2D/3D drawing with associations, but with no assembly hierarchy,
  • AP 203 – 3D designs of project parts,
  • AP 204 – mechanical design along with its representation,
  • AP 214 – Core data for automotive mechanical design.

STP file must follow its specification if they are used for sharing data between different apllications or plaforms. Projects stored in neutral STP format may contain fewer information than those saved in application’s native format. Most commonly exchanged STP data is that of CAD project parts for CAM systems.

Conversion of a STP file

When you install one of the applications from the list of programs that you found here, you should be able to open or edit the file with the STP extension without any issue. However, if you still have problems with this, you may use the option of STP file conversion to a different format.

File Conversions from STP extension to a different format
File conversions from other format to STP file

We hope we helped you solve the problem with the STP file. If you do not know where you can download the application from our list, click on the link (which is the name of the program) - you will find more information there on the location where to download the secure setup version of the required application.

What else may cause problems?

There can be more reasons which determine that you are not able to open the STP file (apart from the lack of the proper application installed).

First - the STP file may be incorrectly associated with the application installed to support it. In this case, you need to change this association by yourself. To do this, right-click on the STP file that you want to edit, click "Open with" and then select the program from the list that you have installed. After this operation, the problems with opening the STP file should be solved.

Second - the file you want to open can simply be damaged. Then, the best solution is to find a new version of given file, or download it again from the same source as before (maybe for some reason in the previous session the download of the STP file has not been completed and it cannot be opened properly).

Do you want to help?

If you have additional information about the STP file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on STP file.

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