File Extension Database

Open 66 File

The file extension identified with the number 66 is of the multi-format type, since it supports several options, ranging from standard images for medical use, to multi-volume zip files, below are some of them:


In this use, files with the extension 66 acquire a standard image format for medical-dental use.


DICOM stands for Digital Imaging and Communications in Medicine and is the international standard for medical images from various sources.

As DICOM is a standard, it defines, under the typical requirements of each manufacturer.

Most medical imaging device manufacturers have adopted DICOM as a standard, as it defines the formats that can be exchanged with data and the quality needed for clinical use.

These extension 66 images can be found in Tomographs, Magnetic Resonators, Electroencephalographs and in equipment from other specific medical areas, such as dentistry.

CREO Elements Pro Engineer

The file extension 66, in this section, is used as a computer-aided design, created with the CAD tool for mechanical parts, Creo Elements/Pro, compatible with Microsoft Windows, and distributed by PTC.

About CREO

PTC Creo Elements/Pro is associative 3D solid modeling software based on mathematical algorithms using CAD/CAM/CAE technologies.

CREO Elements is part of a suite of 10 collaborative type applications that provide solid modeling, mechanical system modeling, orthoprojection, finite element calculation, parametric modeling for mechanical designers.

CREO is a software that uses parameters in the creation of its designs, which are saved in files that use numerical extensions, such as 66, being very useful for mechanical engineers.

Despite its high cost, CREO is still cheaper than market counterparts such as CATIA.

This software owes its popularity among mechanical design engineers due to the implementation of mathematical analysis based on finite element models, and the creation of files for computer-aided manufacturing.

Files with a 66 extension are elements designed by the program, which are part of a larger design set, which in turn has other files with a numerical extension associated with it.

Multi-volume zip format

In this section, file extension 66 is used as a zip file with more than two divisions, when the original file to be compressed is very large or the number of files is larger.

Most programs use this type of extension to generate files of parts, with equal sizes.

It is convenient to use a multi-volume zip, such as the 66 archive, especially if it is to be hosted on a download website.

The 66 file extension means that it is the 66th part of a complete ordered set with a specified number of parts.

That is why we do not recommend opening the 66 file individually and manually, since the original file may be damaged.

Software to open and work with files with extension 66

Due to the variety of formats associated with the 66 extension, it is convenient to know first-hand the available file format, in order to later have one of the following software packages:

Open 66 File on Windows

Open 66 File on Mac OS

Open 66 File on Android

If you downloaded a 66 file on Android device you can open it by following steps below:

Open 66 File on iPhone or iPad

To open 66 File on iOS device follow steps below:

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66 file article translations

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