File Extension Library


.P21 File Extension

  • Category: 3D Image Files

What are .P21 files and how to open them?

Can't open .P21 file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .P21 file.

What is a .P21 file extension?

.P21 file extension has been classified as 3D Image Files.

.P21 is Express STEP Data Model File

3D model format used for three-dimensional product data representation and exchange; saved in an ACSII text format specified by ISO 10303-21; used primarily for industrial automation systems and integration purposes.

NOTE: Express AIM (Application Integrated Model) and MIM (Modular Integrated Model) files must use the .STP extension.

How to fix problems with .P21 files

  1. You need to update the application that you normally use to open .P21 files. Only the latest version of the software supports the current .P21 file format
  2. You need to check the .P21 file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)