A qcow file extension is related to the QEMU Copy-On-Write file format used to store disk images.

Detailed description

Software that works with qcow file extension

Add comment

Bookmark & share this page with others:

QCOW file - QEMU Copy-On-Write file

What is qcow file? How to open qcow files?

The qcow image format is one of the disk image formats supported by the QEMU processor emulator. It is a representation of a fixed size block device in a file. Benefits it offers over using raw dump representation include:

  • Smaller file size, even on filesystems which don't support holes (i.e. sparse files)
  • Copy-on-write support, where the image only represents changes made to an underlying disk image
  • Snapshot support, where the image can contain multiple snapshots of the images history
  • Optional zlib based compression
  • Optional AES encryption

The default software associated to qcow file type:

Qemu Manager picture or screenshot

Qemu Manager  Microsoft Windows software

Company or developer:
David T Reynolds

Qemu Manager, is an easy to use management tool for the QEMU emulator.  It has a wealth of features for creating, managing and running multiple virtual machines.

QEMU icon

QEMU  Linux/Unix software

Company or developer:
Fabrice Bellard

QEMU is a generic and open source machine emulator and virtualizer. When used as a machine emulator, QEMU can run OSes and programs made for one machine (e.g. an ARM board) on a different machine (e.g. your own PC). By using dynamic translation, it achieves very good performances.

Help how to open:

Use QEMU to open *.qcow files.

How to convert:

As far as we know, this .qcow file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

List of software applications associated to the .qcow file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open qcow file, edit qcow file, convert qcow file, view qcow file, play qcow file etc. (if exist software for corresponding action in File-Extensions.org's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is ableto perform the specified software action, such as opening, editing or converting qcow files.

  • Open qcow file
  • Create qcow file
  • Others qcow file

Software that open qcow file - QEMU Copy-On-Write file

Programs supporting the exension qcow on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open qcow file action.

Microsoft Windows:


Previous file extension
PVS file extension

File-Extensions.org > Virtual machine, virtualization software related file types

Next file extension
file extension QCOW2


Follow us!

Enter any file extension without dot (e.g. pdf)
Search for file extension details and associated application(s)

RSS feed